Sort by
Relevancy

Free Stories

100%
Male or Shemale, Still a Slut
Part 1 My name is Brandon. I'm 18 (still in high school), 5'5", white with black hair, and rather feminine. I'm really slim with barely any body hair. All this has combined so that I'm not so popular with the ladies, which sucks cause I am one horny son of a bitch. Luckily, I'm rather fond ... Read full Story
shemale lover 2012-12-20 9,255 Cumshot sucking blonde ass fucking Guy Fucks Shemale
93%
My First Girly Cock
It was cold. I was running fast so that I could not get too wet by the falling rain. The streets were quiet, because everyone was inside. It was twenty minutes before midnight. I was nervous. It would be my first time I'd have sex with anyone other than a woman. I love women. I'm in love with them. ... Read full Story
shemale lover 2015-02-27 5,612 tranny Cumshot Shemale Fucks Guy ass fucking Guy Fucks Shemale
94%
Shemale Ride Along Part 1
I'm going go ahead and get this out of the way. During my freshman year of college, I was confused about my sexuality. It sounds strange saying this right after calling myself confused, but I loved girls. I really did. I loved all of their shapes and curves. I loved tits, pussy and ass. Now... Read full Story
qtball 2016-08-29 12,399 anal tranny Blowjob Big Cock bj asstomouth
100%
Florida TG Experience
I had known Jan from High School, we always had an attraction for each other but were dating someone else or married at the time. Jan had actually married a friend of mine and I was envious of course. She at that time had sandy blonde hair, and a body to die for. One evening we had them over for dr... Read full Story
Jon Paul 2018-08-13 10,873 Group Sex Big Tits Bareback Creampie Blowjob blonde Asian Ladyboy Shemale and Girl Guy Fucks Shemale Ass to Mouth cum in mouth double anal
100%
The Big Mature Shemale Next Door
The Big Mature Shemale Next Door SugarandSalt "Please can I just wear my old swimming trunks?" Warren begged. "No!" his mom yelled back from the other room. "Barbara purchased that for you. It was expensive so you better remember to thank her." Warren looked at himself in the full length mir... Read full Story
Gwapo67 2022-05-03 7,853 Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Mature cum in mouth
94%
The Girl Next Door Ch. 01
derezzed Michael was your average 21-year-old college student. He was on his way home from college for summer break after finishing his finals and looking forward to a few months of relaxation. Driving home Michael reflected on his past three years of college. It had been a great junior year. H... Read full Story
Gwapo67 2022-05-13 6,690 Bareback Creampie Big Cock shemale + shemale
70%
Shemale Gangbang
I am not your average female. But I guess I am not your average male either. You see, I am a tranny. I make a really hot woman. I am 5'10", am slim and have dark, wavy hair that comes down to tight between my shoulder blades. The only thing I was missing was beautiful tits. So I got those as we... Read full Story
shemale lover 2011-08-27 17,357 anal Blowjob cum swallowing
100%
SheMale Pussy and Cock
I once had a friend who always said "never fuck anything you can't bench-press". He was right, the biggest benefit of having sex with someone smaller and lighter than you is you can lift them easily ! On a recent trip to Thailand I couldn't take my eye's off a stunning, short, tiny but ... Read full Story
shemale lover 2012-01-24 4,190 anal shemales gay male
92%
T-Girl Meets T-Girl
It was a silent car ride home. He looked at her, she looked out the window. She looked at him, his eyes were on the road. Neither of them broke the silence. It stayed that way until he parked in her mom's driveway. The soft-spoken young man told his girlfriend, "Goodnight Ashley. I'll call y... Read full Story
shemale lover 2012-08-29 6,125 anal sex Cumshot shemale and shemale domination blondie
94%
Tortured by the T-Girl Tutor
Duncan didn't quite know how to handle it. He'd planned on a quiet Winter Break. Sleeping til noon, watching too much television and eating tons of junk food. That kind of stuff. He had a whole two weeks off from community college. At school, he was an outcast. They say life gets better after hi... Read full Story
shemale lover 2012-12-18 33,969 Big Tits shemale Big Cock Lingerie domination
100%
The Girl Next Door Ch. 02
derezzed Chapter 2 – Taking the Next Step Into Depravity Michael hardly got any sleep that night. When he did his dreams were filled with images of Jenny and her large penis. He tossed and turned in frustration. As he rolled over for what felt like the thousandth time he was blinded by the s... Read full Story
Gwapo67 2022-05-13 5,235 Bareback Creampie Guy Fucks Shemale cum in mouth
91%
The Girl Next Door Ch. 03
derezzed Chapter 3 – The Night Out Michael woke up on Monday morning feeling quite relaxed. The sun filtered in through the blinds towards him. He felt warm from the gentle rays. As Michael became more alert, he examined his surroundings. The feeling of silk sheets wrapped around him and Ale... Read full Story
Gwapo67 2022-05-13 5,934 Bareback Creampie Shemale Fucks Guy threesome Blowjob cum in mouth
100%
Mongoose Hunting and the Dark Car
After my first sexual experience with a trans girl in school (Check out Biology of Music), it was a long time before anything else got me that horny again. Which is obviously understandable given how ridiculous that whole event was. This time instead of a trans girl cumming hot jizz into my mouth af... Read full Story
terrifictim 2023-03-30 5,503 Teen (18+) Cumshot Bareback Creampie Guy Fucks Shemale rimming rimjob Ass to Mouth cum in mouth Surprise secret bathroom sex Daddy daughter risky public
50%
RÉVEIL SEXUEL SISSY ⚧️ ⚧️
Si ses histoires étaient vraies, non seulement beaucoup d'hommes ont eu des réveils sexuels entre la fin de la trentaine et le début de la cinquantaine, mais beaucoup d'hommes de mon âge étaient curieux de se féminiser, de sucer des bites et peut-être même d'avoir des fesses. Mais je ne peux pas ... Read full Story
Femboy 2021 2023-02-17 1,104 Stockings Crossdresser Fetish Blowjob Big Cock Lingerie Guy Fucks Shemale Interracial Sex Toys cum in mouth
50%
"SISSIFIED": 12 JOURS DE SISSY-MAS
JOUR 1: mardi 25 C'était le matin de Noël quand j'ai entendu frapper à ma porte, ce qui était, bien sûr, très étrange à dix heures du matin. À midi, j'allais chez ma famille pour Noël, et j'avais rarement des visiteurs inattendus. Toujours dans ma robe, je me dirigeai vers la porte et fus s... Read full Story
Femboy 2021 2023-01-20 1,265 Stockings Crossdresser Amateur Fetish Blowjob Big Cock Lingerie domination Sex Toys cum in mouth
100%
COMMENT NATHAN EST DEVENU NATALIE ⚧️ ⚧️
Je m'appelle Natalie mais ce n'est pas le nom avec lequel je suis née; c'est plutôt le nom que ma femme m'a donné quand elle a fait de moi sa "sœur" et sa poule mouillée cocu peu de temps après notre mariage. Mon vrai nom est Nathan mais c'est un nom que je préférerais ne plus jamais utiliser parce ... Read full Story
Femboy 2021 2023-04-23 1,544 Teen (18+) Blowjob Lingerie Sex Toys small cock sissy cum in mouth sissify poule mouillée et fille premiere foi
72%
Wie sich schlagartig mein Sex Leben änderte... Teil 1
ich war nun schon einige Zeit heimlicher Crossdresser. Nie wurde ich von meiner Freundin erwischt, auch wenn es manchmal wirklich knapp war! Ich hatte ein sicheres Versteck für meine schönen Sachen und meine Sextoys und konnte hin und wieder meine geheime Neigung ausleben wenn sie nicht da war.Trotz... Read full Story
Holly Swallow 2019-03-20 7,716 Stockings Small Tits Crossdresser Amateur Group Sex Cumshot Fetish threesome Blowjob blonde gangbang domination Interracial Sex Toys humiliation Homemade sissy girlfriend chastity cage Ass to Mouth cum in mouth chastity sissy amateur crossdresser fendom
100%
Towel Boi: You're Hired
Kasey Stevens woke up in his new studio apartment. The five-foot-nine, blue-eyed sissy with ash brown hair yawned and stretched before heading into the bathroom. He showered, taking good care to lather his rosy skin with strawberry scented body wash. He shaved his legs and rinsed off. Then, he appli... Read full Story
Faggyboi and Puzziboi 2023-11-14 5,897 anal Small Tits Crossdresser Amateur Bareback Blowjob Guy Fucks Shemale Interracial small cock big ass femboy
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 5,072 Teen (18+) Crossdresser Group Sex Big Tits Bareback Creampie Big Cock gangbang domination Guy Fucks Shemale Interracial double anal webcams
100%
Emily's First Daddy
This is a story how a curious male can become a sissy slut seemingly overnight. So I was in an online adult chat just talking with random people and happened to mentioned where I live. Then all of sudden, I got a message from a man calling himself bear daddy. He introduced himself and said he was ... Read full Story
User Removed 2019-10-21 8,895 Crossdresser Amateur Creampie Homemade cum in mouth webcams
100%
Camming down the rabbit hole Ch4
It was the morning after the night before, and as I stretched under the bedsheets, a smile spread across my face. Remembering last night’s events, I felt myself stir a little and pressure from the panties I had on adding to the arousal. It has been a while since I had morning wood after a big show, ... Read full Story
Dani_does_Dallas 2021-09-06 3,730 Crossdresser solo Amateur Cumshot Lingerie Sex Toys Homemade pov webcams
100%
Towel Boi: Agreement Signed
Ralph moved the mouse to wake up the computer. He navigated to his legal docs account and downloaded a generic pre-existing relationship agreement. He asked for the spelling of the new hire’s first and last name. “First name K-A-S-E-Y. Last name S-T-E-V-E-N-S.” “Got it,” acknowledged the owner. ... Read full Story
Faggyboi and Puzziboi 2023-11-14 5,823 Crossdresser Bareback Creampie Blowjob Guy Fucks Shemale Interracial small cock big ass sissy femboy
50%
Towel Boi: Heading to Work
“Goddamn, white boi! You got the best fuckin’ ass,” declared the father of two. His steel manly form perspired as he moved hard into the bottom. “Look at all that butt shake! Twerk it for me, baby boi!” “Yes, sir,” cooed Kasey, gyrating rhythmically. “Hell yeah! It’s like fucking two big ol’ ma... Read full Story
Faggyboi and Puzziboi 2023-11-17 5,965 anal Crossdresser Bareback Creampie Blowjob gangbang Lingerie Guy Fucks Shemale Interracial sissy femboy bbc
71%
The story of how I became what I am now...
I was on a trip to Germany with some of my friends. I was 16 when this happened. We went to a club one night and I got really drunk. They challenged me to approach a cute girl and ask her for a drink with me. I was drunk so I didn't really care so I went there and bought her a drink. We talked and I... Read full Story
FeetQueen 2019-01-08 5,332 Stockings Teen (18+) Small Tits Amateur Shemale Fucks Guy Lingerie Homemade cum in mouth
100%
HELPLESS TO MY CRAVING FOR BLACK COCK
This is a totally true account of my addiction to meth and its hand in turning me into the he[pless sissy I've become to my weakness for BBC. My name as a regular male is Richie Budd. But by reading this you'll soon realize that nothing is normal. Not only was I Richard Budd. I spent an equal, if ... Read full Story
Tvtrinity 2021-04-07 9,775 Crossdresser Amateur Group Sex gangbang Interracial transgender sissy bbc Black Owned owned white boy pimped force feminised BNWO
90%
Why does cock look so good on a girl ?
Horny and looking for something to jerk off on, of started surfing porn sites looking for just the right hottie. Pornstar Christie Lee really gets my juices going so I clicked on her. I started watching the video I was familiar with and knew would get me off when I decided to check out all her video... Read full Story
Verdura08 2022-10-17 6,096 Crossdresser Amateur Cumshot Big Cock ts posing huge dildo
100%
Camming down the rabbit hole Ch5
I was jolted out of my sleep by the phone on my bedside table vibrating, bleary eyed I picked it up and saw a message from the couriers that a package would be delivered today around 4pm. The realisation that this was the package I had been waiting for and I could finally wear something else in my s... Read full Story
Dani_does_Dallas 2021-09-29 4,964 Stockings Crossdresser solo Amateur Cumshot Masturbation Lingerie Sex Toys Homemade cum in mouth webcams
100%
I Fooled Everyone But the Black Pimp Part 3
I woke up with images of last night flashing like a strobe light in my brain, with an accompanying audio the voice of Marcus and his haunting words “Your world changes tomorrow”. I’m trying to process everything I did and said last night and I’m struggling to reconcile it all. I like to wear pan... Read full Story
cdtampa4u 2023-05-10 4,564 Crossdresser Interracial sissy bbc
0%
Sexing It Up
What catches your eye when you're viewing sample pornographic video clips on the Internet? When it comes to sex, my own tastes are eclectic, although I find myself watching videos involving anal sex, bisexual threesomes, cum shots, gay males, lesbians, oral sex, public nudity, shemales, and spank... Read full Story
shemale lover 2011-11-26 4,290 interracial sex spanking
66%
TO BE OR NOT TO BE – PART 5
TO BE OR NOT TO BE – PART 5 by Spanky de Bautumn Part 4. Sunny made a life changing decision and in the process becomes better acquainted with Mark. On Monday, I met Mel and Shari at the theater at ten to run lines. I was confident that I knew my part for the first act. My concern was with m... Read full Story
SpankydeBautumn 2021-02-24 2,158 Crossdresser Cumshot Masturbation Blowjob Big Cock Lingerie Interracial
62%
White Sissies on Black Dicks
Sunni inhaled the marijuana, held it in for a few moments, and then released a puff of smoke in the air. The effeminate white man with a platinum blonde Mohawk pressed the number two button on his phone to listen to the message. He heard a deep-voiced Black man say he needed his dick sucked and woul... Read full Story
shemale lover 2014-09-11 12,447 ass suck Big Cock oral sex Interracial cd
100%
TO BE OR NOT TO BE - PART 7
TO BE OR NOT TO BE - PART 7 by Spanky de Bautumn Part 6. Sunny, Mel, and Shari had a heart to heart and Mark took Sunny for a night on the town. I woke up next to Mark, he looked so peaceful sleeping. Was I dreaming? Did I fall asleep and dream that Mark said he was going to take me shopping... Read full Story
SpankydeBautumn 2021-03-01 2,557 Crossdresser Cumshot Bareback Blowjob Big Cock Lingerie Guy Fucks Shemale Interracial cum in mouth
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
100%
Siisy Bride gets what she deserves
I had Ben on a contact site and we live surprisingly close together in Manchester. Ben is a 6’2” black man who has a large sex drive and likes women and girly trannys. I am a slim white guy who likes to dress like a smart woman, not a slut. I haven’t worn a wig for over 6 years ... Read full Story
shemale lover 2012-01-05 4,441 shemales interracial sex bdsm
93%
Sissy Experience - Episode 1: The Beginning
Hello All, Hope you’re all doing well!! This story narrates the beginning of my crossdressing and sissy adventures. Before I begin I’ll tell you somethings about my family. We are a family of four consisting of me, mom, dad and an elder sister. I am currently 20 years old and in college. My da... Read full Story
brownsissyboi 2020-05-15 8,051 Teen (18+) Crossdresser solo Amateur Cumshot Masturbation Fetish Asian Lingerie Homemade
100%
My shemale initiation
I was alone at home. Wife gone for a vacation. I was surfing the net. I am infatuated with shemales. I looked at redbook and saw a very sexy lady. I contacted her. I drove to her hotel and picked her up. She was gorgeous. As we drove to my house, I asked about the size of her package. She said 9". I... Read full Story
shedawg 2022-04-04 5,453 Amateur Shemale Fucks Guy cum in mouth
100%
Camming Down the Rabbit Hole Ch. 10
As the sun beamed in through a gap in the curtains my now familiar morning wood strained at the silk of my nightwear. How was it that no matter how hard I came the night before it would wake up eager and ready to go. As had become customary my mind would be filled with the events of the previous nig... Read full Story
Dani_does_Dallas 2022-04-12 3,415 Crossdresser solo Amateur Cumshot Masturbation Lingerie Sex Toys Homemade self sucking cum in mouth webcams
100%
I Fooled Everyone But the Black Pimp Part 1
So I’m sitting at the pub drinking with the guys and talking sports and pussy. I’m wearing work boots, jeans and a white T shirt. I’m also wearing purple panties and a butt plug wishing I was getting spit roasted by big cocks. I'm very restless on my bar stool as I grind my hungry hole down ... Read full Story
cdtampa4u 2023-05-04 5,304 Crossdresser Interracial black cock sissy Pnp Closet Sissy
50%
lust of a sex-agenarian nana-pops
Frenzied lust of a sex-agenarian nana-pops; between dream and reality I had never fantasized of a manly man, even after offering my virginity; to a fabulous sissy. Before my new Era, my fantasy preferences were always with glabrous he-she’s, same about my relationships after… BUT BUT BUT… My last t... Read full Story
hippocampus_171 2023-07-09 4,636 anal Small Tits Amateur Group Sex Masturbation Guy Fucks Shemale Sex Toys Mature small cock big ass sissy femboy
70%
A day to remember
so I'm on a business trip and decide to call an escort to make this trip worthwhile. set up a time for an afternoon date call when I get to the parking lot. she answers the door in a nice skirt and top on invites me in and we procede to her bedroom. from there stood the sexiest black tgirl Ive ... Read full Story
BlkCockJockey 2018-04-17 6,285 Shemale Fucks Guy Big Cock Ebony Interracial
100%
My Sissy, his first time
My fella has always been happy to dress and be a slut for me, suck my dick and take a small dildo in his pussy. Until now I hadn't fucked him properly as he was to nervous. Recently we had been following the exploits of a CD friend through his blog and I knew they really excited my husband. When the... Read full Story
Aplane1 2021-11-01 3,502 Stockings Crossdresser Amateur Cumshot Lingerie Sex Toys
85%
I Fooled Everyone But the Black Pimp Part 2
He hands me the glass pipe and I put it to my lips. It looked a little like a hash pipe from high school so I ask, “is this hash?” As he puts a torch under the bubble at the end, Marcus says, “Trust me, sissy. This is just what you need. Now when I tell you, inhale very slowly and I’ll tell you whe... Read full Story
cdtampa4u 2023-05-10 5,268 Crossdresser Interracial sissy bbc cum in mouth
100%
I Fooled Everyone But the Black Pimp Part 4
Fuck. I said I wasn’t going to do any drugs and I’m drinking this Gatorade that I know has something in it. Trish said it would help my nerves, and it has, I feel loose…and very horny. When I’m usually horny my cock is hard but right now, I’m putting lotion on my body and I’m going really slow over ... Read full Story
cdtampa4u 2023-05-17 4,948 Crossdresser Blowjob Interracial sissy bbc
100%
Additional Thoughts on Sodomy
Although, in the world (or worlds?) of pornography and erotica, it is politically incorrect, perhaps, to suggest that the body, whether male or female, is not built for anal intercourse, the fact is that anyone who has participated in this act (especially on the receiving end) or who has enjoyed wat... Read full Story
shemale lover 2011-10-05 3,947 Creampie sperm anus
100%
Sabbatical or Continuous Gang Bang? Chapter 2
I awoke several hours later still laying on top of Rick his arms holding me tight to him. His cock had gone flaccid as we slept and slipped out of me. I felt like I had run a marathon and my ass pussy felt like it had a marathon run through it. I slipped out of Ricks arms onto the bed and went into ... Read full Story
shemale lover 2012-08-28 3,763 anal Crossdresser Fetish Interracial
100%
Francis Meets a Black Stud Part 3
As I washed myself in the women's bathhouse, I began to regret everything I had done. I had already cum and the sexual intoxication seemed to be gone. I could not believe that I had willingly submitted to what I had allowed that black man had done to me. I began to be very disgusted with myself. Fur... Read full Story
shemale lover 2012-11-20 3,647 sucking handjob black cock
100%
Property To Be Pimped
It had been weeks since I'd brought to light my idea of my wife, Suzie, strapping on a big dildo and taking me dressed as Desiree, the Hot to Trot Transvestite. While at first she teased me with possible participation, it never came to be, despite me bringing it up on several occasions. She really d... Read full Story
shemale lover 2013-01-17 7,187 Stockings Crossdresser sucking dildo Interracial
100%
Allison the pool slut part 1
Allison had now had her fair share of whore experience. The teen boyslut had fallen in love with big cocks, anal creampies, facials, swallowing, and the rest of the nasty fun she had while becoming a sissy whore for her black neighbor and his dark dicked friends. Little did she know she was going to... Read full Story
shemale lover 2013-06-05 7,697 Teen (18+) Cumshot Big Cock ass fucking Interracial cd
100%
My bbc adventure at the adult theater
Gurls, you have no idea. I think I'm in luv. Omg he was amazing. No pics, but I was in my 6 inch cum fuck me pumps, had on an opaque black body stocking with red fishnet thigh highs on top of it, a frilly lacey black ultra miniskirt, black Lacey top with my corset underneath tied real tight to gi... Read full Story
shemale lover 2013-06-20 7,673 Crossdresser hardcore ass fucking Interracial public cd
95%
My introduction to tits & cock
I was just 18 and working maintenance at the Florida condo complex always curious and super horny. It was a Friday and I was sent to 2032 to do a minor repair, I knocked but nobody was home so I used my master key and entered. The condo was very clean but right on the coffee table where some porn ma... Read full Story
In Need Of Some Huge Black Cock 2019-04-23 9,889 Amateur gangbang Interracial
75%
Sissify Your Boyfriend Manual - transation
original= manual-sissificar-a-tu-novio-4979 Used google translate, found some pronoun/object/context issues, and I believe ladybug = ladyboy Sissify Your Boyfriend Manual MANUAL FOR WIFE/GIRLFRIEND TO SISSIFY YOUR MAN, DISCOVER HIS SUBMISSIVE SIDE AND TURN HIM INTO ?HORNAND? AN... Read full Story
shelli_k18 2021-04-20 8,325 femdom sissyboy sissification sissy training FLR hotwife guidelines Modern Marriage Power exchange
100%
Chapter 1 - My Cuckold Life
I have a small penis. In fact, I have a very small penis. I’ve been in permanent chastity for over 7 years. My wife and her lovers call it my “caged clitty” and that’s about right as far as it being a useful penis. I suppose I should start at the beginning. I’ve never been much of a man. I’m ... Read full Story
Sissy Annabelle 2022-08-23 6,065 Crossdresser Interracial sissy chastity Cuckold Husband
100%
Be carefull what you wish for (pt.1)
This is the story how my life got turned around completly and i became a broken sissy fucktoy. I was 19 years old and just finished my second semester of university. I studied in my hometown vienna (europe) and still lived with my parents. I was a pretty average young man except for my one big s... Read full Story
tvsusisissy 2023-11-13 7,266 Crossdresser Amateur sissy daddy
78%
First Time Having Sex With A Shemale
Ok let's begin so I was walking down the street going to the store one day I saw a woman and her daughter moving into a house they had some heavy boxes that they need help with. At first I thought she was white girl but when I got closer to them they we're Asian becuase i only saw the back and they ... Read full Story
bigtranslover 2011-05-21 14,925 first time shemales interracial sex
50%
Transgender Art: A Sampler
It's not often that transgender art offers viewers a glimpse of a female-to-male transsexual. Usually, the transformation is in the other direction, with the loss of the vagina in favor of male genitals and the acquisition of female breasts. However, one image does reverse this trend, showing a fema... Read full Story
shemale lover 2011-09-06 3,545 shemale transsexual transgender
97%
How I Met Alyssa
I groaned as the sun was shining onto my face. I turned around so I could get some more sleep, but I saw it was 9:22 am and I decided it was time to get up. I got out of bed and went to the bathroom of my little apartment to freshen up a bit. I looked at myself in the mirror and saw a 20 year o... Read full Story
shemale lover 2013-02-12 14,107 hardcore sucking Big Cock ass fucking big boobs