Sort by
Relevancy

Free Stories

100%
Khwaish Pune fucked me hard
I am a shemale trans lover. Me 6 ft tall, muscular, handsome , fair man 52 resides at pune. I use tobe top but last two years I am living being bottom too. I love sucking shecocks and hv sucked quite few in pune. Story begins when I was looking for some trans partner on Planet Romeo I came acro... Read full Story
Stud4Shemale 2024-04-14 3,061 cum in mouth Indian Shemale Pune Shemale Shemale Fuck Man hard-core shenale fuck
85%
My Awkward Phase
My Awkward Phase ©Alexandra Rios 2019 The greatest lie is that what happens in high school doesn't matter, because life begins in college. I pretended to agree, although I never believed it, for I was the world's greatest liar. Wannabees I was hanging out with my friends Quinn, Barb and Anne ... Read full Story
the greatest liar 2019-06-14 11,797 Small Tits anal sex Latina Masturbation Bareback Creampie Blowjob Big Cock transformation gangbang Shemale and Girl Guy Fucks Shemale Sex Toys Ass to Mouth cosplay hormones high school real life situations
77%
Slut indiscretion
At 17, I had reputation among the people in my world. I had sucked more dicks than the average hooker. I had slept with men of every race creed and color. You can even throw in a mentally challenged lad or and autistic child as well. All because I loved getting sex. I think that a penis is the sexi... Read full Story
Regina10 2020-09-16 5,391 Crossdresser Big Tits Cumshot Bareback Blowjob Big Cock Ladyboy Lingerie domination Guy Fucks Shemale Ass to Mouth
66%
Be My Bitch
After a long day at work, I get in my car, and look forward to the long drive home. It gives me time to unwind and relax. I try to forget about the hectic office and concentrate on my beautiful girlfriend waiting at home with that warm smile that she greets me with when I get there. However, tod... Read full Story
Go Balls Deep or Go Home 2018-08-06 31,261 Crossdresser Outdoor Bareback Blowjob Big Cock Ladyboy Lingerie domination Guy Fucks Shemale Interracial Sex Toys Ass to Mouth cum in mouth
22%
Just me...
When I first started to get high, I was such a good freak. I started taking pictures of myself in panties and lingerie, taking pictures of my dick and showing the world, showing off my tight little asshole, just trying to become a porn star. I still want to be a porn star because I know that I would... Read full Story
AllOfMe 2018-06-01 3,804 Teen (18+) Ladyboy redhead Guy Fucks Shemale Interracial Ass to Mouth cum in mouth
80%
fuck by my best friend's family
= Part 1. Alice's father = My name is Onikky 28-year-old Shemale from ASIAN, this story only shares the first experience of making love. The story begins when I first moved to a big city, looking for a new atmosphere, I don't have a place to live that I know is only my friend's name Alice who ... Read full Story
Onikky 2019-06-25 9,298 Amateur Masturbation Big Cock Asian Ladyboy gangbang Lingerie domination Guy Fucks Shemale Sex Toys Homemade Ass to Mouth cum in mouth
75%
So good fuck with me and my klients.
Hello, I am Francesca, and I offer company to couples and women. A few days ago, a couple hired me for two hours.The woman was fucking me with her strapon while I was stroking the man's cock. She was pushing her hard cock deeper and inside me, I could feel my ass dissolving more and more. I turn my ... Read full Story
Francheskahotass 2021-08-11 3,285 Crossdresser Amateur Group Sex Cumshot Shemale Fucks Guy threesome Ladyboy Lingerie Guy Fucks Shemale Sex Toys Homemade Ass to Mouth cum in mouth
90%
Sissy Slut and Stepdads
Frank was pumping me hard and his huge cock seemed to have grown and become extra hard. I am so thrilled that way he enjoys fucking my ass with such passion. I would almost think he was in love with me if this relationship wasn't so bizarrey. It’s ironic that as a male I always get total humiliation... Read full Story
Regina10 2020-11-30 9,196 Crossdresser Bareback Creampie Fetish Blowjob blonde Big Cock Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth double anal
100%
Cheating Sissy Wife chapter2
My sweetheart Keith is back from his road trip and we were about to make up for lost time. He didn’t even want me to fix dinner. Instead he said that we would order pizza later. Meanwhile we started making out right there on the couch. We were both horny and anxious to get next to each other. I felt... Read full Story
Regina10 2020-10-26 4,732 Crossdresser Big Tits Cumshot Bareback Creampie Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale pov Ass to Mouth
100%
Slutty Sissy's 2 Loves
Tonight was young and I was already hot and bothered, my ass-pussy was on fire, and I could hardly wait for Bob and John to come over. I had invited them over to fulfill those erotic dreams I am constantly having about the two of them using me like a tool, and I wanted that so bad. I fantasized abou... Read full Story
Regina10 2020-11-23 4,939 Group Sex Big Tits Cumshot Bareback Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale pov Ass to Mouth cum in mouth double anal
85%
Cheating Sissy Wife
My name is Ginger and my main stud is Keith, a truck driver, who is only in town once a week. We have and ongoing role-playing fantasy that we carried out whenever he was in town. I am his dutiful ideal housewife who is perfect in every way. My talents excel in both the kitchen and the bedroom. I fi... Read full Story
Regina10 2020-07-27 7,578 Crossdresser Bareback Big Cock Ebony Ladyboy Lingerie Ass to Mouth cum in mouth double anal
100%
Regina and Tommy
I was getting fucked hard and aggressively by a certified bad boy named Tommy. I've never been the kind of girl who liked bad boys until I met Tommy. Tommy like doing all kinds of wild crazy things to me and I was under a spell and couldn’t object. Tommy was like the asspussy whisperer and he gave m... Read full Story
Regina10 2022-03-02 2,930 Stockings Big Tits Cumshot Bareback Creampie Fetish Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth
80%
intimate Cousins
My favorite cousin and first lover, Billy, was just released from prison and I was anxious to see him. I am ecstatic that he is out, and I am thinking about all the past fun we had as I prepare to revisit those good times. Tommy knows all about my relationship with Billy and he understands my need t... Read full Story
Regina10 2022-05-13 5,984 Stockings Crossdresser Cumshot Masturbation Bareback Blowjob Big Cock Ladyboy Guy Fucks Shemale Ass to Mouth cum in mouth double anal
91%
Hot Slutty Sissy
Hello, It’s me, and. I am about to make a big decision and right now I am dedicated to my fantasy. I got a call today from one of my ex boyfriends. I got so horny when I heard his voice that my nipples turn to steel. My titties seem to respond to the sound of his vibrating baritone. I couldn’t refu... Read full Story
Regina10 2020-08-14 6,738 Crossdresser Cumshot Bareback Fetish Blowjob blonde Big Cock Ebony Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth
100%
Hung Trans Lesbians Fuck Two Ladyboys
Note 1: If you like Transsexuals, Trans Lesbians, Asian Ladyboys, Big Cocks, Extreme Cock Sucking, Anal Fucking, Anal Fisting, Semen Swallowing, Role Play, Orgies, BDSM, Cock Sounding and Foot Fetish this story is for you. Note 2: All the characters are over 21. The names are fictitious, but some... Read full Story
darrell 2022-01-03 4,275 Group Sex Big Tits Cumshot Bareback Fetish Blowjob Big Cock Asian Ladyboy Sex Toys Mature cum in mouth shemale + shemale
100%
I need some advice
I’m so emotional today. I haven’t been able to spend quality time with my bf in weeks. Let me explain. Me and my girlfriend both work from home now so I haven’t been able to get away for long to see my side nigga. Today was supposed to be the day we actually got to spend the day together. My girlfri... Read full Story
Wet boy kitty 2021-02-01 2,461 Crossdresser Amateur Cumshot Masturbation Bareback Creampie Ladyboy Lingerie Ass to Mouth cum in mouth
100%
Lady and the Cop continued
The next night Regina got a visit from. Larry the cop who openly declared war on shemales and trannies. He was working a homicide where a trannie friend had been killed in her apartment. Larry was a known shemale hater and he never failed to express his opinions. Tonight he was in her apartment to ... Read full Story
Regina10 2018-03-06 4,630 Small Tits Big Cock Ebony Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth
100%
Sissie Slut's Windows of Womanhood
I flash back to my first time with a grownup adult at the tender age of16 . I was so nervous now that we were here in the motel room. I was nervous for so many reasons. I lied to my family and told them I was staying at a friend’s house. Instead, I'm here with Mr. Joey in a motel room and he was my... Read full Story
Regina10 2021-02-22 6,599 Crossdresser Bareback Creampie Fetish Blowjob blonde Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth cum in mouth double anal
65%
Marcia Goes Back to School
Marcia was painfully nervous. She hadn't been able to eat very much in days. The upside was she was even skinnier which would make Mistress and her husband very happy. She'd always been thin and on the diet Mistress Carol had her on she was already thinner than she dreamed possible. Her anxious stom... Read full Story
shemale lover 2012-12-19 10,527 Masturbation Blowjob blonde ass fucking big boobs
91%
HOW MY AUNT AND SISSY NEPHEW CHANGED MY LIFE FOREVER! (fictional
It was the very first night of my month long North Carolina July summer vacation stay when my Aunt Meg suddenly entered the bedroom that I was temporarily sharing with my younger cousin Rudy. Being so openly effeminine in his body language,voice and looks, I had already planted such dirty thoughts ... Read full Story
CDDIXIE4U 2019-01-08 33,660 Teen (18+) Crossdresser Cumshot Masturbation Bareback Shemale Fucks Guy Fetish Blowjob Big Cock Ladyboy Lingerie domination Homemade Compilation cum in mouth shemale + shemale
50%
Lady Regina
I know that many say that I I’m a coward because I am comfortable living in the closet as a part time female and not expressing my special female side completely. My friends all tell me to go out and have fun and not worry about what people say or think. In spite of that, and because of the prudish... Read full Story
Regina10 2022-07-01 4,984 Crossdresser Big Tits Masturbation Bareback Fetish Blowjob Ladyboy gangbang Lingerie Guy Fucks Shemale Mature pov
100%
HOW ONE PEEPING TOM MORNING TURNED ME INTO A SHEMALE SISSY BITCH
It was while cutting across his back trailer park lawn around 7pm on misty July Saturday evening, when I first discovered that Mr. Parker was really a fag. How else could you describe a man wearing a long blonde wig on his head while below he wore only a large somehow stuffed pink lacey woman's bra ... Read full Story
CDDIXIE4U 2019-01-08 13,801 Teen (18+) Crossdresser Amateur Cumshot Masturbation Blowjob Big Cock Ladyboy Lingerie domination Guy Fucks Shemale Homemade Compilation Vintage cum in mouth
76%
Porn Princess
They say if you are going on a journey of revenge, to dig 2 graves, one for your enemy and one for yourself. I thought I understood the meaning of that saying, but never so much as right now. My name is Dan, and at the age of 21, I had been working for nearly 2 years as a production manager for ... Read full Story
shemale lover 2012-09-02 23,916 Cumshot Blowjob fuck fingering big boobs
100%
She took her licks getting there,now she loves to do the licking
I miss my cock. Sometimes. I had one once - one of my very own, connected right to me - but now it's gone. Never thought I would miss it. I'm sure you've guessed by now that I am a full transexual. I had the boob job and started hormone treatment years ago and felt much better as a shemale than a... Read full Story
shemale lover 2011-11-15 2,182 transsexual orgasm boob job
66%
Samantha sissy TGTF
Theme and genre of the story: The genre is about gender bender, futanari, gay, physical transformations of the body, magic and biology, the kink in particular that must excite in the story is the perversion of the transformation of the body and mind through a magical element that manipulates biol... Read full Story
Samantha sissy world 2022-09-20 4,539 Teen (18+) Crossdresser Big Tits transformation transgender feminization pov sissification Cartoon magic Gender Bender
100%
Santa & Mrs. Claus
In my story called "Santa Likes Fembois" here I explained that I discovered that last Christmas when Santa Claus visited my house then made me suck on his cock before fucking my boypussy. He also gave me an actual present: a winning lottery ticket. Well, with that multi-million dollar winning ticket... Read full Story
Chrissy Tunnell 2022-12-01 3,558 Crossdresser Amateur Bareback Fetish Blowjob Ladyboy Lingerie domination Guy Fucks Shemale Mature cum in mouth
100%
From a 50's virgin to a Mature good for all
***Prologue - Confessions: Every day since I offered my virginity, I put myself in the shoes of a woman. The little town where I live forbids me to show myself socially. However I made myself an accomplice, my epilator who receives me after closing. Since my new beginning, male masturbations are not... Read full Story
hippocampus_171 2023-01-11 4,297 Stockings Crossdresser Amateur Group Sex threesome Big Cock domination Mature foursome Homemade cum in mouth shemale + shemale milfs
90%
Becoming a Drag Queen
I was thrilled when my boss told me he was sending me to San Francisco for a conference. It was a location on my "Top 10 places I wanted to go". I went online and Googled the major attractions and tourist "must sees in San Francisco. The conference was Wednesday to Friday and I figure... Read full Story
shemale lover 2012-03-01 13,879 first time sucking fuck domination
100%
Exotic Escapades Chapter 3
The smell of wood and coffee filled the quiet house as Tammy slowly picked herself up from a plush couch. Daggers of sunlight blinded her eyes as she eventually got on her two feet. Her body ached, and she noticed a small pink bandage on her left leg. The terror and pain of last night shook her as s... Read full Story
shemale lover 2012-05-05 2,974 tranny Creampie Big Cock Ladyboy fingering oral sex
100%
Camming Down the Rabbit Hole Ch. 09
As per my previous mornings recently, I stirred and rubbed the sleep from my eyes, that delicious feeling of my silk night ware stretching over my taught nipples and my morning wood throbbing in its lace enclosure. The urge to touch myself was palpable, it seemed no matter how hard I came the night ... Read full Story
Dani_does_Dallas 2022-03-22 3,377 Stockings Crossdresser solo Amateur Cumshot Masturbation Lingerie Sex Toys Homemade self sucking pov cum in mouth webcams
85%
A Girl Called Eddie
Carrie had always treated me like her little sister, even though we were only third cousins. Though she was only two years older than I was and not of exceptional physical stature, I had allowed her to dominate me for as long as I could remember. Not that she was exceptionally cruel or abusive in an... Read full Story
shemale lover 2011-08-14 5,400 anal sex asshole Lingerie
100%
The Society
I met her during the summer. I was only nineteen and working to save some money for college. I had been raised by my grandparents who had both passed away over the past year. After the burial costs I was far from wealthy. My parents weren't around so I was on my own at a young age. I had moved a cou... Read full Story
shemale lover 2013-01-10 17,239 Crossdresser sucking Big Cock ass licking big boobs
95%
My TS Journey
I'm a straight, married guy in my 30's, at least that how I appear to everyone that knows me. I have an intense obsession with Trans women that I have been indulging since I was a teenager. Over the years this fixation has grown into something that ranged from watching porn initially, to having my a... Read full Story
iconicirish 2022-10-26 8,150 Amateur Shemale Fucks Guy Big Cock domination cum in mouth escort ts
87%
TO BE OR NOT TO BE – PART 1
TO BE OR NOT TO BE – PART 1 by Spanky de Bautumn This is a story about how taking a play to New York City changed people's lives. A transgender coming of age story. I was born Harold Stanley Dayes, not a great name for a kid growing up. I know my parents loved me, but Harold was my mom's dad a... Read full Story
SpankydeBautumn 2021-02-22 3,775 Crossdresser Amateur Group Sex Cumshot Fetish threesome Blowjob Ladyboy Lingerie Shemale and Girl cum in mouth
100%
TO BE OR NOT TO BE – PART 2
TO BE OR NOT TO BE – PART 2 by Spanky de Bautumn Part 1. Sunny, Mel, and Shari learn they are going to New York to perform a play off Broadway and are really excited about it. Being a small troupe, we unseen members had to wear many hats. Unfortunately, there was just the two of us, Joe Donn... Read full Story
SpankydeBautumn 2021-02-22 3,588 Small Tits Crossdresser Cumshot Bareback Blowjob Big Cock Lingerie Guy Fucks Shemale Interracial cum in mouth
100%
Caught Dressed
Caught Dressed by Jordan Skythe Chapter One He turned in fright as the bedroom door opened, and frantically pulled his comforter off the bed as Bradley entered. “That was locked!” Brad straightened and smiled. “Woah! Hi!” “What the hell!” Brad motioned to the door frame. “You do know there’s... Read full Story
AuthorJordanSkythe 2022-01-20 3,554 Stockings Crossdresser Bareback Blowjob Uniform Lingerie
100%
Late Night Snack (Touch me in the morning)
I was awakened abruptly by someone banging on my door at 1am. At first, I thought it might be Harry, the man who replaced Mr. Cobb in my bed a few nights ago. He had been persistent and horny constantly. I think it was because fucking trans women like me was new to him and he hadn’t got enough of th... Read full Story
Regina10 2024-03-28 3,868 anal Big Tits Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Ebony Ladyboy Lingerie
66%
Trannies in Space
There was no spaceport on Jansen's Planet. There had been, but whatever calamity had befallen the world generations ago had also destroyed its port. It was one of so many planets out in the Barrens that had fallen on hard times. So Dekker set down the Barnabas in a clearing in the forest, a remna... Read full Story
ASSEaster5678 2019-01-25 12,100 Shemale Fucks Guy Guy Fucks Shemale Sex Toys space robots
75%
Blue collar Master, white collar slave Part 2
About an hour later I was once again naked except for my chastity pouch and my stilettos and once again I was screaming and crying, my body covered with angry red welts from Master Darren's whip. On my knees crying and begging I held his cock in my hands, trying to give the best handjob ... Read full Story
shemale lover 2012-01-13 11,293 torture extreme fiction bondage and discipline
50%
The Greatest Lie Part 17
They say that life is about making choices. But we humans don't get to choose the two most important factors in our lives. We don't get to choose our genes, so I got stuck with XY chromosomes. And we don't get to choose our natal families, so I got stuck with my mother and father. My father, Edua... Read full Story
shemale lover 2012-01-20 4,469 erotic encounters fantastic consensual
100%
Just One of Those Days Part 2
Hello again. My name is Amanda, though sometimes I use the shortened version Mandy, when the mood suits me. I'm 33 and have stayed single for three years, since I discovered that Richard, my boyfriend, was not only cheating on me with dozens of women, some my so called friends but was al... Read full Story
shemale lover 2011-12-09 3,198 cum massage shemale sex
100%
Anastasia's Life So Far
Chapter 1: Humbling Beginnings My story starts where most every crossdresser's story starts. It starts somewhere around the time I was an infant. I can remember not to mention being told several thousand times that my choice of toys as a child was dolls, strollers, dress up and tea parties, Barbi... Read full Story
shemale lover 2012-11-27 10,954 Fetish crossdressing feminization
90%
Collette's Property
I've been Collette's lover for four years now and this gorgeous, incredibly kinky woman still continues to amaze me. Our sex life would be unimaginable to most people, even those who live lives embracing BDSM and other fetishes, and it's Collette who makes it happen. Of course everything is a trade ... Read full Story
shemale lover 2012-12-19 7,951 anal Crossdresser Blowjob domination ass fingering
100%
A Game within a Game Part 1
Epilogue Rob came home from work. His wife Jenny was waiting for him. In her hands she held a letter. Jenny said: "We received this letter today. It is sad news from Marion S. We have met her and her husband John a few times - do you remember? John has had a car accident while driving fas... Read full Story
shemale lover 2012-03-05 14,151 Fetish bdsm crossdressing bisexual
100%
Sabbatical or Continuous Gang Bang?
My twin sister Laura had already left to go back to college this fall season, but I had decided to take off a semester as I was totally burnt out on school and needed a break. We were twins but not identical though we did look a lot alike and roughly the same size me being a few inches taller. My... Read full Story
shemale lover 2012-08-28 5,515 Crossdresser Cumshot Fetish Blowjob gangbang
96%
New Job, New Life as as Sissy Slut Chapter 2
I was left lying on the floor, my face completely covered in cum. I was wearing lingerie and a dog collar and I had just been fucked long and hard by my "boss." My virginity had been forcefully taken. The thing is that I loved it. I loved being manhandled by this muscular man and I really ... Read full Story
shemale lover 2012-12-23 7,387 Cumshot Uniform Lingerie ass fucking domination
80%
One night Transtand ;)
One Night Transtand By BalkanMan990 Published on Lush Stories on 05 Oct 2019 I had no idea she was a trans.. I didn't stop kissing or fondling her when I found out. I went out for a drink at one of the many bars at Croatia,where my girlfriend Sabina and I were staying.Sabina and I had been drin... Read full Story
BalkanLoco91Ri 2019-10-24 8,877 Small Tits Amateur Cumshot Masturbation Creampie Shemale Fucks Guy Blowjob blonde Lingerie Guy Fucks Shemale Homemade pov cum in mouth
100%
Santa Likes Shemales Femboys
Did you know Santa Clause is real....and he likes shemales femboys??!I It happened last Christmas Eve. I fell asleep watching the snow fall just outside my window. I was comfy under my layers of warm blankets I clutched tightly, in the black lace panties and red lingerie night dress or nighty I wear... Read full Story
Chrissy Tunnell 2022-12-01 3,584 Small Tits Crossdresser Amateur Bareback Fetish Big Cock Ladyboy Lingerie domination Guy Fucks Shemale Mature
75%
Aunt trip
In 2013, after almost three years of service in Afghanistan, George Madsen, a gay Royal Navy communications petty officer, retired. His experience in the distant deserts had left an indelible mark, the memories of friends lost and challenges faced still burned vividly in his mind. Coming home was n... Read full Story
Rebba 2024-04-25 3,101 Shemale Fucks Guy Blowjob Big Cock Ladyboy Guy Fucks Shemale shemale fucks shemale Fantasy Tale
60%
The Ultimate Cock Ball Torture
I miss my cock. Sometimes. I had one once - one of my very own, connected right to me - but now it's gone. Never thought I would miss it. I'm sure you've guessed by now that I am a full transexual. I had the boob job and started hormone treatment years ago and felt much better as a shemale th... Read full Story
shemale lover 2011-11-12 7,050 shemale transformation
95%
A Helping Hand
It was late on a Friday night when I heard my parents arguing. It always happened whenever they were getting ready to throw a big party. My mother played the role of party planner and handled all of the details, but between caterers, musicians, and the other help something always went haywire. My fa... Read full Story
shemale lover 2012-03-09 14,826 Fetish bdsm transformation
50%
The Ultimate Cock Ball Torture
I miss my cock. Sometimes. I had one once - one of my very own, connected right to me - but now it's gone. Never thought I would miss it. I'm sure you've guessed by now that I am a full transexual. I had the boob job and started hormone treatment years ago and felt much better as a shemale th... Read full Story
shemale lover 2012-04-29 3,552 anal sex oral sex
100%
A Schoolgirl Story Chapter 2
I must apologise for the amount of time that it has taken for the second chapter of this story to come out. I have to admit that I had kind of abandoned it, but all your lovely feedback comments made me decide that I couldn't leave this one hanging. So thank you to everyone who wanted more of Wendy,... Read full Story
shemale lover 2012-06-05 8,450 Group Sex Cumshot oral sex assfucking
96%
New Job, New Life as as Sissy Slut
I was nearing my thirtieth birthday and times were getting tough financially. I had gotten laid off from my job and was collecting unemployment and doing some part-time work helping out friends with odd jobs. One of them suggested that I look into cleaning houses. I've always been very neat and peop... Read full Story
shemale lover 2012-12-23 9,520 sucking Uniform domination swallowing spanking
100%
Camming down the rabbit hole Ch6
In the morning I decided to give the running a miss and do a long session with the DVD, my legs had become a little sore and tight so some extra stretches and yoga would really help. I once again surprised myself with how much more flexible I had become, the plug still in my ass giving me occasional... Read full Story
Dani_does_Dallas 2021-10-11 4,837 Stockings Crossdresser solo Amateur Cumshot Masturbation Lingerie Sex Toys Homemade pov cum in mouth webcams
60%
Brotherly Love, Sisterly Love Chapter 2
"RACHEL" My twin sister, and sometime brother, and I had been experimenting sexually with each other and crossdressing together for around a month, growing to love and to perfect our new feminine personas until they became the ones we thought of as our true selves. Whenever our parents ... Read full Story
shemale lover 2012-09-28 6,526 Cumshot Fetish oral sex cum swallowing