Sort by
Relevancy

Free Stories

100%
Threesome fun
We had invited friend over who has big cock --he arrived and we sat around for awhile talking about sexual encounters of the past --I'm a bi part time shemale cross dresser who is very kinky --anyway it got around to looking around the house and as it happened we stopped in the bedroom , and all o... Read full Story
goodgurl34 2019-01-08 4,622 Stockings Crossdresser Amateur Big Tits threesome Blowjob Big Cock Lingerie domination Guy Fucks Shemale Mature Homemade threesome sex
100%
Yellow Polka Dot Bikini(s)
"She was afraid to come out of the locker. She was as nervous as she could be. She was afraid to come out of the locker. She was afraid that somebody would see. Two, three, four, tell the people what she wore. It was an itsy, bitsy, teenie, weenie, yellow polka-dot bikini that she wore for the ... Read full Story
shemale lover 2012-08-22 3,966 Fetish bikini crossdressing sissy
100%
A Perfect Pandemic: A Transsexual Transition in a Troubled Time
A Perfect Pandemic A Transsexual Transition in a Troubled Time A Novelette by Alexandra Rios Text Copyright Reserved © August, 2021 Dedication Transgender Day of Remembrance is a solemn occasion. I am offering “A Perfect Pandemic” for free as an antidote to the fear, phobia, discrimination, d... Read full Story
the greatest liar 2021-11-16 6,270 Teen (18+) Crossdresser Group Sex Big Tits Bareback Creampie Big Cock gangbang domination Guy Fucks Shemale Interracial double anal webcams
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 3,827 Small Tits Crossdresser Cumshot Bareback Blowjob Big Cock Lingerie Guy Fucks Shemale Interracial cum in mouth
100%
My Sugar Daddy Spanked Me & My Girlfriend (I screwed up again)
In my last fantasy article I explained how my Sugar Daddy allows me to date girls since I am bisexual and attracted to them too, but they, and in fact anyone, are not allowed to touch me intimately without explicit permission from my Daddy. Anytime a girl wants to touch me: kiss, hold hands, put her... Read full Story
Chrissy Tunnell 2022-04-12 2,391 Crossdresser Amateur Big Tits Shemale Fucks Guy Fetish threesome Blowjob Big Cock Ladyboy Shemale and Girl Guy Fucks Shemale cum in mouth
100%
She lied ........ Part 1
I had walked into this bar on Castro St. in San Francisco, not realizing that it was a place for transsexuals. I chatted up with this super sexy bartender dressed in all lime green. We made small talk & she invited me up to her place after work. Being that she lived only 4 blocks away & it was a... Read full Story
Curious_billy 2023-04-14 6,775 Amateur Big Tits Cumshot Blowjob Big Cock domination Homemade
100%
I fucked the hotel handy man and he had a monster cock
I was on vacation in a new town and decided to stay at this new hotel. I heard it was the best and the location was close to some sites I wanted to explore. I enjoyed my stay there, especially one evening when my air conditioner stopped working, and the hotel guy came to fix it. He looked so hot tha... Read full Story
Madison Heights 2023-09-05 7,065 anal ass Big Tits Cumshot Bareback Creampie Fetish Uniform piss Ass to Mouth cum in mouth monster cock watersports
100%
The Big Tiddy Goth Girl
Hannah and I went to the pool in my apartment complex. This was my first time dressed as female in public and I was loving my new, feminine tan lines. To keep a long story short, while tanning we were perv'd on and approached by a guy calling himself Mark. He was desperate for our attention and fumb... Read full Story
KaceyKlarissa 2024-02-23 5,117 Crossdresser Big Tits Cumshot Masturbation threesome Big Cock Shemale and Girl small cock big ass sissy femboy cum on tits goth
88%
Mom's girlfriend has a fat cock
When I was a teenager, my mother got remarried...to a woman. At first it was odd, because their roles in the relationship were so clear. My mother was the "bottom", and Jamie was the "top". They're great to each other, and I have grown to love Jamie unconditionally. I'm eigh... Read full Story
TripFontaine 2012-05-14 15,872 anal cock shemale cum tits lesbian
100%
Nikki's Massive Strap-on
A quick recap in case you haven't read my previous stories. My name is Kacey. I'm 20 years old, white, 5'10" and 150 lbs. I have straight, shoulder length dark brown hair, light brown eyes and a thick, 6" cut cock. My girlfriend is Hannah, who also 20 years old and stands 5'10" weighing in at 140 lb... Read full Story
KaceyKlarissa 2024-02-23 5,136 anal Crossdresser Big Tits Cumshot Fetish Big Cock Lingerie Shemale and Girl domination big ass Futanari sissy cum in mouth
57%
Sucking cock, a curiosity. Part 1
I've been a straight man since forever. I've also been into sex and porn since I was young. And my fetishes always involved tits and big asses. Any kind of tit play turned me on. Still does. When I was 14, I saw a porno and watched tittyfucking for the first time. It turned me on so much, ... Read full Story
bigdickthug 2017-05-22 5,283 Fetish Big Cock Sex Toys
100%
Connie at an Adult Bookstore Part 2
Disclaimer: The following story is not intended for minors. If you are offended by sexually explicit material or it is not legal in your place of residence, please close the document now. If not, I hope you enjoy my attempt at entertaining you with stories of my adventures. * In the previous c... Read full Story
shemale lover 2011-09-30 8,721 Big Tits Blowjob deepthroating
60%
Teasing BIG BLACK COCKS at truck stops
I'm a white blonde bubble butt Tgirl living in Las Vegas and sometimes I go out and cruise the truck stops on I15 down south to I10. I do it at night and sometimes for a whole weekend in my mini van which has darkened windows. I love to get out of my mini van and walk around the back parking row at ... Read full Story
TgirlJill4BBC 2013-06-03 8,239 Stockings blonde Big Cock cum Lingerie Interracial Latex
100%
First time with big surprise
My first story translated into English, I hope you like it. It was late at night, I had been drinking with friends and was on my way home. I am a man in his early 30s, smartly dressed and looking quite attractive. The night was beautiful, clear sky, warm and in the city were some people on the ... Read full Story
Marten1201 2023-01-06 6,995 Big Tits Bareback Creampie Shemale Fucks Guy blonde Big Cock
81%
That night....
I was extremely nervous when I pulled out my phone and dialed the number. Never before, in my wildest dreams, had I thought I would act on one of my strongest fantasies. I knew I would be nervous when I first met her, but after exchanging pictures and seeing that big, fat cock of hers, I knew I ha... Read full Story
bigTHICKY 2017-05-08 9,538 Big Tits Cumshot Latina Big Cock Ladyboy cum in mouth
100%
Alessia Travestita Hung Mature Blonde British Porn Star
Alessia Travestita Hung Mature Blonde British Porn Star If you like Transexuals, big cocks, bondage, domination, deep throat, fisting, spit roast, 69, ass fucking, cum swallowing and big loads this story is for you. If not don’t bother reading. If you like my story please leave comments and ... Read full Story
darrell 2022-01-03 5,079 Group Sex Cumshot Bareback Shemale Fucks Guy Blowjob Big Cock gangbang domination Sex Toys Mature cum in mouth shemale + shemale
100%
Tight Spot
XtinaSmith2017 Cody bit his lip as he looked over towards the shop, a little anxious about their planned endeavor but not wanting to come off as uncool to his friends, "Are you sure this is a good idea?" he asked. His friends grinned and laughed, playfully nudging him as they made their way ... Read full Story
Gwapo67 2022-07-22 6,092 Big Tits Bareback Creampie Shemale Fucks Guy Fetish Blowjob Big Cock Lingerie domination cum in mouth
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 34,370 Teen (18+) Crossdresser Cumshot Masturbation Bareback Shemale Fucks Guy Fetish Blowjob Big Cock Ladyboy Lingerie domination Homemade Compilation cum in mouth shemale + shemale
100%
Meeting Amanda
I’m a happily married man. My wife Tess and I have been together since we were teenagers. We were each other’s first real lovers and being in our mid-thirties by now, we still madly in love with each other. Tess and I always are very honest and open to each other. Both in normal life and sexual... Read full Story
rforasht 2022-07-20 7,706 Big Tits Cumshot Shemale Fucks Guy threesome blonde Big Cock Lingerie Shemale and Girl redhead Homemade Shemale fucks couple
33%
A Certain Perception
Kyra was not the girl of my dreams. I never DARED dream a woman that good would just walk into my life. She was smart, sassy, vivacious, intuitive, resourceful, and a real 'people person'. We met in an Internet chat room called "Working Girls". We're not talking about the kind you find in ... Read full Story
shemale lover 2012-02-23 8,442 Fetish transformation dildo
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 10,787 Masturbation Blowjob blonde ass fucking big boobs
85%
BANGING AROUND BANGKOK
BANGING AROUND BANGKOK: THE AMOROUS ADVENTURES OF CAITLIN "MEOW" MORRISON after living and working in Thailand/SE Asia for many years i decided to write an erotic story based on some of the people i have known, venues and places i have been, and the P4P night-scene where i spent way too much... Read full Story
bkkldby 2019-06-17 14,369 first time Teen (18+) Amateur Group Sex Big Tits Cumshot Outdoor Bareback Blowjob Big Cock Asian lesbian public place
100%
A Fairy Tale Part 2
=-=-Chapter Six-=-= I woke up sometime later and I was feeling better, even a little hungry actually, and I wanted a shower and I needed to pee and...I cocked my head as I heard the unmistakable sounds of Mistress Stacy's bed moving. She had a large one, king sized, with old springs or somethi... Read full Story
shemale lover 2011-12-06 6,891 Creampie Big Cock ass fucking
60%
The Clinic
I got out of my cab and looked up at the Clinic. It was a small, nondescript hospital. I was still pretty nervous about this treatment since I wasn't even sure of the details. But it was either this or go under the knife. This problem had to be dealt with. I picked up my bag and went into the lobby.... Read full Story
shemale lover 2012-05-02 6,075 Cumshot Big Cock jerking off oral sex cum swallowing
100%
Regina’s Double threat.
Hello guys, I recently ran into a former hater who was no longer the hater I had met years earlier. In fact, he had only treated me so horribly because of his own inner dark desires. When we met a few years ago at one of the clubs, he had been very abusive to me. He went out of his way to say hurtfu... Read full Story
Regina10 2022-02-08 3,233 Big Tits Cumshot Bareback Creampie Fetish Blowjob blonde Big Cock redhead Guy Fucks Shemale Ass to Mouth double anal
80%
Buffy the Shemale Vampire Slayer Part 14
"Let's get this over with," Buffy suggested. "The sooner we start, the sooner I kick your demon ass." Baphomet smiled. "You will fuck the witch," he said, "while I fuck you." Buffy shook her head. "Willow's my best friend. I can't-" "Th... Read full Story
shemale lover 2011-08-23 5,250 anal sex asshole Big Cock
100%
An Invitation
"Oh come on,Sarah. There has to be a way." An innocuous enough statement, but that's how it all started. I'd just received an invite to Cressida's annual Christmas party which, maybe not on the Hollywood A list, was within the cognoscenti an occasion not to be missed. The soirees of ... Read full Story
shemale lover 2012-11-16 4,748 Fetish oral sissy
95%
Proud To Be A Sissy Chapter 8
I woke up to hear daddy lightly snoring and in my sleep I had draped a leg over him so that my body was almost covering him. I giggled to myself realizing that even in my sleep the sissy slut in me reached to grasp his flaccid penis. Then I curled closer up against daddy and contemplated about how m... Read full Story
shemale lover 2012-12-24 9,429 Teen (18+) Crossdresser Uniform Lingerie domination
80%
How it started
What got me started off watching shemale porn was actually meeting a very beautiful shemale at a beach party. I already knew she was a guy but she was so beautiful. So at one point I asked her if she wanted to go for a walk and after a few minutes and let her know that I was down. Her response was ... Read full Story
PNPFUCKBOY 2019-02-12 12,144 Teen (18+) Small Tits Crossdresser Amateur Big Tits Outdoor Latina Bareback blonde Big Cock Ladyboy domination Guy Fucks Shemale Interracial Sex Toys Mature Homemade Ass to Mouth
100%
First fuck in public ;)
You’re only wearing a coat, I find a place where, I can kiss you then slide my hand between the flaps of your coat. I expose your breasts and slide my hand down across your tummy down to your pussy. My fingers start to explore your soft bush, working there way to your soft pink lips surrounding your... Read full Story
BalkanLoco91Ri 2019-08-26 4,034 Stockings Teen (18+) Amateur Big Tits Cumshot Outdoor Masturbation Bareback Creampie Blowjob Big Cock Uniform domination Homemade pov cum in mouth
100%
Sissy Slut and Stepdads part 2
My mother kicked Frankie out and swore that he was the last loser she would ever date. She believed that we were still having sex, and she was right. Pure raw animal lust drove us, and It was even better when we sneaked and got. That nervous adrenaline mixed with my passion and made me super horny a... Read full Story
Regina10 2021-02-15 4,301 Teen (18+) Crossdresser Big Tits Cumshot Masturbation Fetish Blowjob Big Cock Lingerie Guy Fucks Shemale Homemade Ass to Mouth
76%
Nylon teasers
They came into the video store where I worked as a clerk. Almost every day. Teasers. Both of them. What made it both great and terrible for me was that it fed my deepest fetish -- stockings -- as it denied me any fulfillment other than frequent and frantic "self-gratification."... Read full Story
shemale lover 2012-01-30 10,112 Stockings Big Tits fucking foot fetish
92%
MY Party Favor Fantasy
My Party Favor Fantasy A fictional story built around an old fantasy of mine I ran a notice on one of those sex sites that said” Help me fulfill my fantasy and I bet we take care of some of yours also. Hi there, I am Penny and I am a total bottom trans w... Read full Story
pennypenny 2019-01-08 7,493 Stockings Crossdresser Group Sex Cumshot Masturbation Bareback Creampie Fetish threesome Blowjob Big Cock gangbang Lingerie redhead domination Guy Fucks Shemale Sex Toys Ass to Mouth cum in mouth double anal
91%
My Seductive Secret (True Story)
During my childhood, me and my brother used to play with two other boys who were our neighbors every weekend. One day we decided to wrestle, and I took on the youngest one, (he was about 2 years younger than me, like my brother) and we wrestled in the shed while my bro and his bro (who was my age) w... Read full Story
Chickzdigmeyup 2019-06-18 14,310 Stockings Teen (18+) Small Tits Crossdresser Cumshot Outdoor Masturbation Bareback Fetish Blowjob Big Cock Lingerie domination Sex Toys Homemade cum in mouth
66%
A different couple
I am Hans, as I already mentioned in my previous story, I am a mature guy (47 years old) who came to the Island of Tenerife more than two decades ago. I am a drinker, a womanizer and a gambler. In these more than 20 years I have seen them in all colors. I have made a lot of money and lost as much, I... Read full Story
lkusex 2021-03-08 5,842 Amateur Big Tits domination
100%
The Experience of a Lifetime
My divorce was hitting me really hard. My wife outgrew our relationship and started living her own life and I had a front row seat to everything. My heart and life was upside down. I didn’t go out anymore. Friends and family both told me it was time to get my life back on track and start living ... Read full Story
therefill05 2020-11-30 20,437 Big Tits Cumshot Bareback Creampie Shemale Fucks Guy threesome Blowjob blonde Big Cock Ebony Uniform domination cum in mouth
91%
Panty Town
Chapter One -- Jamie Jamie Sanders did not think he was a sissy. Growing up, he played with trucks and showed his innate male aggression though soldiers games with the other boys. He climbed trees and watched baseball with his Dad and brother. Unfortunately, by the time he was in eighth grad... Read full Story
shemale lover 2012-01-29 19,628 Big Tits sucking ass licking fucking
88%
Who's She?
School had been a bore for Tony. He was a bright lad and didn't have to work too hard to get through classes unnoticed by the teachers and class mates. He had plenty of friends but no one close. He didn't excel in sports or academically. He had picked up a few good exam results but had decided that ... Read full Story
Vinny_A 2019-07-08 11,859 Teen (18+) Crossdresser Amateur Big Tits Bareback Blowjob Lingerie
75%
Rebound
My story is nothing new, like most girls who used to be boys I knew from an early age that I was different to all my school friends. My dad was a thug of a man, who enjoyed the physical battle of the rugby pitch as much as the post match booze up, but I took after the mother who died giving birth to... Read full Story
shemale lover 2011-11-25 6,362 anal Creampie oral
50%
Fangs for the Mammaries
I awoke from my dreamless sleep moments after dusk and opened my coffin. Darkness had descended upon the city and I felt the need. I was hungry. It was time to feed. It had been this way for several centuries and it wouldn't change in millennia as long as I was nourished with human blood. Not just a... Read full Story
shemale lover 2012-05-26 2,995 Fetish crossdressing fiction
100%
Pleasantly Surprised
It was Friday night and Robert was sitting at home alone. His roommates were both out on dates, and his girlfriend, correct that ex-girlfriend, had moved all of her things out three weeks ago. It had been one of the dullest months in his adult life; four weeks of sitting in front of the television, ... Read full Story
shemale lover 2012-08-31 6,453 Big Tits Cumshot sucking threesome blondie
37%
Wedding Night Surprise
its my big dream to marry one women in our night wedding in the bed when i start to make her naked a discover i big dick between her legs wow she demand me to hide this secret and i accept ans she abuse to take me and more...... Read full Story
BIG DICK HUSBAND 2018-12-06 15,596 Big Tits Cumshot Bareback Creampie Shemale Fucks Guy Blowjob blonde shemale Big Cock Asian Ladyboy Lingerie domination Mature Homemade Ass to Mouth Surprise Weddings night husband
100%
Exposure, Disclosure
The Greatest Liar, Exposure, Disclosure © Alexandra Rios 2019 Author’s Note: This is a continuation of the narrative which commenced with “My Awkward Phase”, which I posted here previously. Readers may wish to read that before continuing, although I have written them to stand alone. Natives s... Read full Story
the greatest liar 2019-06-18 7,873 Teen (18+) Small Tits Amateur Group Sex Latina Blowjob gangbang Guy Fucks Shemale cum in mouth
91%
Masturbation fantasies: Amanda, queen of the peep show
A guy visits a peep show with unexpected results. As he gets to watch a girl with something special, he discovers his hidden desires. This story contains: peep show – voyeur – gloryhole - fake tits – group masturbation – male masturbation – shemale – frottage - titfucking When William finall... Read full Story
ThatEroticWriter 2019-07-24 8,649 Big Tits Cumshot Masturbation Uniform Frottage
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 9,164 Small Tits Amateur Cumshot Masturbation Creampie Shemale Fucks Guy Blowjob blonde Lingerie Guy Fucks Shemale Homemade pov cum in mouth
62%
Naples
I had been at sea about a month when my ship pulled into Naples, Italy. The only action I had seen had been slipping away to my hiding place on the ship to jack my dick on a regular basis. I was ready to find some Italian pussy. I was slim about 6' with blonde hair and a fat 7" cock that ... Read full Story
shemale lover 2011-12-16 6,619 Teen (18+) shemale gay
90%
DISCOVERING BLACK COCK
To the greater Boston general public it was simply a small little known quite private night club located in the back part of Roxbury called The Black Rooster Bar. While in local Gay Community circles, insiders called this private by membership only pub, THE BLACK COCK CASTLE! When first learning... Read full Story
CD DIXIE IN NH 2016-05-10 10,406 Big Cock cumming sperm ebony cock
80%
The Grass Ain't Always Greener...
Lawn care takes an unexpected voyeurism and exhibitionism masturbation detour I cut grass, mow lawns, manicure shrubs, trim bushes, and plant trees. Right handed and always trimming from the right side, I've never been a switch hitter when using my hedge trimmer, if you know what I mean. Always ... Read full Story
shemale lover 2013-01-16 5,176 Masturbation Blowjob blonde jerking big boobs
84%
Abi's Virginity taken by Intruders
Abi got very little time to be herself, A closet TV, sharing a small two bedroom flat with a male friend, it was only once every few months or so she got the flat to herself and could dress up sexy and be her proper girly self, and tonight was one of those nights! Although she had no plans to mee... Read full Story
AbiTV 2015-03-18 6,542 Crossdresser threesome sex fantasy virgin
100%
KING OF TRANNY CHASERS ENTRY 2
LAST YEAR TO CELEBRATE MY BIRTHDAY I DECIDED TO FULFILL ONE OF MY SEXUAL FANTASITES. I HAD BEEN WITH 2 CIS WOMEN SEVERAL TIMES BUT NEVER HAD I BEEN WITH 2 TRANNIES. MY BIRTHDAY WAS ON A FRIDAY SO I SPENT THAT DAY AND THE NEXT CELEBRATING WITH MY FAMILY AND GINA..THAT SUNDAY I SET UP AND PLANNE... Read full Story
Ghostface drillah 2024-07-04 2,910 anal Amateur Group Sex Big Tits Cumshot Shemale Fucks Guy Fetish Big Cock Guy Fucks Shemale big ass Homemade Ass to Mouth shemale fucks shemale
71%
TGirl Initiation by 3 BIG BLACK 12
In my teen years I was often told that I was quite feminine.The high school punks always told me that I filled out the back of my jeans in a girly way. After taking a shower one day I did notice that they were right, I had a nice white bubble butt. Not to mention that my lips were also quite girly. ... Read full Story
TgirlJill4BBC 2013-06-04 9,257 Stockings Cumshot suck Big Cock Lingerie Interracial Latex
87%
Fem Firm 3: The Return Of Frankie
PART 1 THE VISITOR Over the next couple of months, it was pretty much business as usual at the Firm. You know, depositions, court filings, motions, hot sloppy blow jobs and ass destroying anal sex (Thanks Angela!).Not to mention Friday Fuckfests. But since I started working here everyone se... Read full Story
bennyx709 2016-11-14 12,475 anal sex ass fucking oral sex cock sucking thick cock
80%
Spankys mother cloths torn off on stage reveal she has cockoc
Erotic website remake of the little Rascals short film remake of Beginners Luck. The audience is laughing hysterically at Spanky attempts to open his stuck helmet. Spankys mother, a blonde beauty peeks out at the audience from the stage wing, as the crowd’s loud laughter, nervously biting her finge... Read full Story
kucksissylicktoman 2020-06-16 5,386 Big Tits Cumshot Masturbation Fetish Blowjob blonde Big Cock gangbang Lingerie Guy Fucks Shemale cum in mouth shemale + shemale
100%
Sudden Shemale
I woke up from the anaesthetic, still very groggy and uncertain. I couldn't remember anything, and my head and body ached terribly. I glanced around, trying to lift my head off the pillow, but it just didn't work. After a few minutes, I tried again, and this time I managed to stand up. I was ... Read full Story
shemale lover 2011-08-30 5,965 asshole pussy Big Cock
100%
Our special trip
John and I were having a nice relaxing afternoon cuddled up on the couch watching TV. Our relationship was shifting from all about great sex to enjoying the time we spent together just being ourselves, with me dressed up of course, and the sex seemed to me to be more loving. I'd still seduced him at... Read full Story
shemale lover 2012-02-22 3,160 Fetish cum fuck wig dressing
75%
Amy & Hope
My name is Amy but my real name Anthony and I turned 21 and started my first step on becoming a woman I decided to get some breasts for my birthday since I'm becoming a woman so after the surgery I felt more like a woman I was 5'9 weight120 and had long brown hair and some perfect size tits they was... Read full Story
shemale lover 2012-04-25 3,583 Big Tits cum transformation oral sex vaginal sex