Sort by
Relevancy

Free Stories

50%
Mistress Wants My Balls
I always pretended to myself I was straight. Mistress knew better, and she had a purpose for me... When I woke, the basement was dark, lit only by a fitful lamp that gave off a dull light. The leather straps that bound me to ceiling and floor cut into my flesh. Our session last night was more ... Read full Story
letmesucku 2024-04-10 3,441 feminization FEMINIZED Castration castrated shemale no balls empty sack
54%
My lifes story, which I want to share it with world!
Since my childhood very beginning every time when I see female to which I am attracted to, I imagine how I would go down on her, I just love to do enjoying it for hours. I am obsessed with cunnilingus and I do it with passion!... and then this happened... I'm still writing my full movie scene abo... Read full Story
Sanitaladyboy 2020-09-02 3,762 Stockings Crossdresser Amateur Group Sex Shemale Fucks Guy Fetish threesome Big Cock Ladyboy Lingerie domination Sex Toys
50%
KING OF TRANNY CHASERS ENTRY 1
IT WAS AROUND 1AM AND MY GIRL FRIEND GINA AND I ARE GOING AT IT.HER NAKED BODY WAS HANGING OFF THE BED IN DOGGY.HER BIG CARAMEL ASS CHEEKS JIGGLED AS A POUNDED FROM BEHIND. SHE WAS SCREAMING "YES BABY" AND MOANING NON STOP..AS BEAUTIFUL AS SHE LOOKED AND HOW AMAZING HER BACK SHOTS WERE LOOKING..W... Read full Story
Ghostface drillah 2024-07-02 762 Amateur Big Tits Masturbation Big Cock Ebony Guy Fucks Shemale big ass Homemade Ass to Mouth cum in mouth
75%
Morning Head Becomes All Day Affair
I just woke up, super horny, and reach down with my hand, take out your soft cock and slowly work it while your still sleeping. Making it harder...and...harder til it's rock hard, I slip under our silk sheets and wrap my hot mouth around you stiff rod. Licking and caressing it up....a... Read full Story
Go Balls Deep or Go Home 2017-09-12 6,500 Blowjob Big Cock domination Ass to Mouth cum in mouth
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 4,408 Stockings Crossdresser Amateur Big Tits threesome Blowjob Big Cock Lingerie domination Guy Fucks Shemale Mature Homemade threesome sex
94%
My first Shemale
“Curious? Bi?” Well, yes, but only with a shemale. Beyond that I’m a firmly planted heterosexual. For many years I longed to have sex with a shemale but never did anything about it. (I’m not much of an initiator). The community I live in has lots of shemale beauts; maybe that started my intere... Read full Story
SachinJoy 2018-10-04 32,599 Cumshot Shemale Fucks Guy Blowjob Big Cock Ladyboy cum in mouth
45%
Threesome with random muslim men from Dubai -
As you all know, most of the meetings with my clients happen in good 3-star or 4-star hotels. Clients normally visit my hotel room and have fun. This exciting session happened during my stay in a 3-star hotel room in Bangalore on March 1st and 2nd. I had bookings for both the days and was prepare... Read full Story
Manusha Tranny 2021-10-14 8,996 Crossdresser Cumshot Outdoor threesome Blowjob Big Cock Asian Ladyboy gangbang domination Guy Fucks Shemale Ass to Mouth cum in mouth
71%
Thai Ladyboy Interview
An Afternoon With Some Thai Ladyboys I spent this afternoon with 6 Thai ladyboys. No, don't go thinking that I tried them out. I didn't. I spent a few hours chatting with them, finding about them, trying to understand what makes them tick and learning about their experiences and the guys who util... Read full Story
shemale lover 2012-08-11 12,409 Fetish Asian Ladyboy
81%
First time with ladyboy / bottom
Hi everyone! now it is my turn to share my experience in Thailand. We were on a Christmas vacation on an island, and I didn’t even know ladyboy existed then. At a Christmas beach party I chatted and danced with a woman and we ended up in my bungalow. We kissed a lot and I knew that now I was g... Read full Story
FoxyLover'ts 2020-10-06 16,117 Cumshot Blowjob Big Cock domination Interracial Homemade cum in mouth ladyboy ts thailand ladyboy shemale fuck guys virgin ass bottom boy bottom virgin
50%
How A straight tatted white guy turned me out to a femboy
So I met this straight white guy on an app (wont say) hes tatted a bit thuggish and likes black femboys I noticed. At that time in my life I really didnt embrace being femme I was kinda in the middle doing the cute gay twink boy thing. He didnt mind me presenting male he did like black guys or femme... Read full Story
Ezra_Kyle25 2024-07-18 831 Crossdresser Amateur Ebony domination Guy Fucks Shemale Interracial big ass Homemade sissy femboy interracial fuck
100%
Being Shemale Part II
After sometime the driver left. Night Two I was again ready by 10 Pm as usual wearing make up and sexy night outfit. My push up bra helped my breast look very attractive looked perfect with my slim body I was standing as usual in the balcony around 11 PM and the driver stopped by again.... Read full Story
babydriver 2024-06-04 2,307 Amateur Shemale Fucks Guy Big Cock Asian Ladyboy Lingerie domination small cock big ass Frottage sissy femboy
100%
Philippines Vacation with a Dominant Big Cock Ladyboy
I am still in a state of unbelievable joy that I was lucky enough to experience this but I 100% did and I can’t stop thinking about it as I thought things like this only happen in porn or fantasies. Buckle up because this is a wild one and happened in Manila May 2024. I had the opportunity to vi... Read full Story
AllenB 2024-07-14 2,261 Bareback Creampie Shemale Fucks Guy Big Cock Ladyboy Guy Fucks Shemale cum in mouth domination act filipina ts filipina ladyboy
81%
Ladyboy Switch Story
I am messed up with how I feel about this. I still love looking at women. I love tits and arse. I like the soft feel of women – kissing them and feeling their bodies. I don’t look at men in public and get turned on – men with clothes on do nothing for me. Put me somewhere that I can see those same m... Read full Story
shemale lover 2015-02-27 7,030 Cumshot suck Shemale Fucks Guy Ladyboy ass fucking swallowing
97%
Shemale fucks guy - My gf fucks my slutty ass.
I have a shemale girlfriend & we both are in a relationship. One day, I decide to give her a visit. I'm 5'7 guy & she's 6 feet. That makes her tall & intimidating & whenever we meet, it's me who become her gf. I visit her, she takes me in. SHe pulls me towards her while giving me a deep kiss. I ... Read full Story
glodobox 2020-12-04 22,167 Amateur Creampie Shemale Fucks Guy Fetish Blowjob Big Cock Ladyboy Homemade 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 2,230 Crossdresser Amateur Big Tits Shemale Fucks Guy Fetish threesome Blowjob Big Cock Ladyboy Shemale and Girl Guy Fucks Shemale cum in mouth
100%
Big Dick Alessia Visits Dallas
Alessia Hung Mature MILF travels to visit a Big Dicked Man and his Sexy Household If you like Transexuals, big cocks, bondage, BBWs, big clits, deep throat, fisting, 69, ass fucking, sounding, piercing, cum swallowing and big loads this story is for you. If not don't bother reading. If you fav... Read full Story
darrell 2022-04-20 4,332 Group Sex Cumshot Shemale Fucks Guy Blowjob blonde Big Cock Asian Shemale and Girl Sex Toys Mature Ass to Mouth shemale + shemale
41%
My first date with a "shemale"
I met a guy whom i worked with and found out he was bisexual,it didn't bother me nor did i care because i know who i was.I realized he was trying to date me without asking me if i was that way.I flat out turned him down and told him i didn't go that way! I was still young and new to this. I was coo... Read full Story
bmogotti 2020-03-09 13,080 anal first time Small Tits Crossdresser Amateur Blowjob shemale Big Cock Ebony fuck Lingerie Guy Fucks Shemale Homemade motel
50%
La pistola NEGRA del Tío, entre Las Bragas de Mi Tía LA PUTONA
Aaayyy.. Yo sabía que la Tía había sido Flor de PUTONA.. pero, jamás me imaginé que me iba a tocar a mí 'hacerme cargo de sus cosas'.. su 'herencia'.. la casa ya vieja, por reordenar destinar y.. LAS COSAS que una descubre ya con los años! Todo estaba igual, pero HORRIBLEMENTE ARRUINADO.. más, e... Read full Story
Ari Riè 2021-06-03 2,114 Teen (18+) Small Tits Crossdresser Latina Bareback Shemale Fucks Guy Fetish blonde Big Cock Uniform Lingerie domination Premium HD
100%
Bangkok Night with Thai Ladyboy Dancer
I was visiting Thailand back in the 90s and was blown away by the “Potpourri” of sites, sounds, and smells (not all of them good) of this city. Beautiful women were at every corner and very friendly to foreigners. I went out with a group of guys on the town after dark to check out the go-go bar scen... Read full Story
AllenB 2022-04-20 5,828 Shemale Fucks Guy Asian Guy Fucks Shemale rimming bottom ladyboys cum in mouth top Versatile
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 4,334 Stockings Crossdresser Amateur Group Sex threesome Big Cock domination Mature foursome Homemade cum in mouth shemale + shemale milfs
50%
Being Shemale
Every night I wear make up and dress up in a sexy lingerie. I stand in my balcony late night trying to lure men and women driving on the road. Last night a truck driver stopped near my house to inspect his vehicle. During his inspection he suddenly saw a long legged booty women in the balcony inf... Read full Story
babydriver 2024-06-04 2,301 Stockings Crossdresser solo Outdoor Ebony Asian Ladyboy Lingerie big ass sissy femboy
90%
Sister fucks Cross-dresser brother
James pulled his cock out of my pussy and scooted across the bed to my face. He aimed his blowhole for my mouth. "Don't get any on the pillow," I said. He didn't seem to hear. James hunched over. His eyes narrowed. He stroked his Johnson. The jizz flew. I opened my mouth and closed my eyes.... Read full Story
ASSEaster5678 2018-09-14 10,469 Ladyboy Sister and Ts Brother
50%
My Shemale Sex Adventures
Fresh meat Kevin Judd submits to hot top Korra Del Rio in this sexy Valentines Day special. Sensual domination is Goddess Korra's forte and oh boy does she deliver once she gets her hands on this new submissive slut Kevin. Decked out in seductive, strappy black lingerie, thigh high stockings and hee... Read full Story
KevinRichardJudd 2020-06-16 4,092 Shemale Fucks Guy
50%
How Sia Shemale Pune fucked me ...
I met Sia through ts-dating . Called her n went to meet her. When I saw her I could not believe that she is shemale n has got cock between her legs. My god so beautiful feminine. Her implants are very sexy n make her more beautiful... Then I paid her n we went to comfortable small bedroom. I d... Read full Story
Stud4Shemale 2021-02-19 5,673 Shemale Fucks Guy Blowjob Big Cock Asian Ladyboy big boobs cum in mouth shemale fucks male Indian Shemale Pune
100%
My story; don’t know which one... English version (1)
I notice that the're not many french language readers so have I decided to publish an English version End of the 80s; a tough time for a young reporter travelling thousands of km's for a crumb of titbit. A new event and more pressure every day for me. Seeing me in this floundering state during a ... Read full Story
hippocampus_171 2022-07-21 3,549 Small Tits Crossdresser Amateur Bareback domination Sex Toys Mature Homemade
87%
Threesome for Desi
After months of looking for someone to join us for a threesome, we finally found someone and he is coming over tonight. We are all going to meet at your place so I get over there right after work to get ready. We both take a shower and get dressed before he arrives. We sit on the couch together as w... Read full Story
b0099b 2016-04-27 4,991 anal threesome cd Desi
96%
Ladyboy surprise in Bankgkok
A few years ago I went to Thailand for the first time, my first stop was the bustling city of Bangkok. I had heard stories about the nightlife, the girls and the tourists. The country had never appealed to me that much but through a twist of fate I ended up visiting the city of sin for a couple of d... Read full Story
Gracemel121 2021-03-25 11,847 Amateur Shemale Fucks Guy Big Cock Asian Ladyboy cum in mouth
90%
My shemale bride
I've been dating a beautiful girl for about a year, her name's Sasha, she's got long dark hair, beautiful blue eyes, slim very sexy body, perfect, my little angel, and we get on great, so much so we decide to marry, only one problem, she won't let me in her knickers, but this make me respect her eve... Read full Story
shemale lover 2015-06-01 15,279 anal cum domination
73%
Free Shemale Dating Site The Place Where I Want To Spend My Life
Browsing through all payed porn services left my wallet thin, so I went for free shemale dating site option. When my boss noticed that I was paying less attention to work and more attention to Shemales, he fired me without any notice. I was hit hard with the economic crisis - the bank sell my hou... Read full Story
shemale lover 2016-08-26 5,419 sucking pissing Ladyboy
92%
How do you do it?
this is just a quick little story. or really a question i could say. at first trannys were a complete joke for me. my friend tricked me into watching the porn cause the guy looked like a girl and bam when i saw the penis i turned the video off. I couldnt stop thinking about it to the point where ... Read full Story
coolguy456 2015-02-15 3,616 Teen (18+) Shemale Fucks Guy Ladyboy big ass
73%
Nancy the hot and sexy TS in Pattaya
Hi this is Ris, this is my third story. Well Last year I went to Thailand on lone trip. I went directly to pattaya and had rest and went to Walking Street in the evening. Was visiting many nude bars, ts Bars, dance bars. but while walking on the street one particular girl catch my attention. s... Read full Story
Stud4Shemale 2017-05-22 9,463 Big Tits Cumshot Shemale Fucks Guy Ladyboy Guy Fucks Shemale cum in mouth
56%
Big cock shemale from Pune, India
I just saw her profile on Planet Romeo, her name is ID is Kaynat / Muskan. I saw her photos and got attracted to her. I am always a big fan and lover of Shemales or TS. I called her and fixed appointment by negotiating with her for 2500 INR. I went to meet her, she stays in a condominium in ... Read full Story
Stud4Shemale 2017-05-22 95,887 Big Cock Asian Ladyboy Guy Fucks Shemale Ass to Mouth cum in mouth
50%
The BIG COCK that I will eat.
ENGLISH: Hello friends. In the link below, you can see the tranny cock that will fuck me in the days to come. I saw her advertised on the internet, I picked up the phone and called, I will see her when her clinical tests are negative for sexually transmitted diseases, because I will surely swallow... Read full Story
cuchillo 2020-09-18 7,688 Amateur Cumshot Latina Shemale Fucks Guy Blowjob Big Cock Homemade cum in mouth brunette ts swallow cum
100%
TO BE OR NOT TO BE – PART 6
TO BE OR NOT TO BE – PART 6 by Spanky de Bautumn Part 5. Sunny and Antonio got frisky at the bar, Sunny moved in with Mel and Shari, and opening night was a success The only other dress that I brought was one that I hoped I would get a chance to wear but didn't think I would. It was a black ... Read full Story
SpankydeBautumn 2021-02-26 2,432 Stockings Small Tits Crossdresser Cumshot Creampie Blowjob Big Cock Lingerie Guy Fucks Shemale cum in mouth
100%
TO BE OR NOT TO BE – PART 6
TO BE OR NOT TO BE – PART 6 by Spanky de Bautumn Part 5. Sunny and Antonio got frisky at the bar, Sunny moved in with Mel and Shari, and opening night was a success The only other dress that I brought was one that I hoped I would get a chance to wear but didn't think I would. It was a black ... Read full Story
SpankydeBautumn 2021-02-26 2,436 Crossdresser Cumshot Masturbation Bareback Creampie Blowjob Big Cock Lingerie Guy Fucks Shemale cum in mouth
100%
Sub to a Tranny story
One night as I was leaving a bar, I was approached by a beautiful woman who asked for my help. Not having plan I agreed. I followed her to her car and helped her take some stuff inside her apartment. After a couple minutes, I was about to leave when she offered me a cooked dinner. Well I am not ... Read full Story
77James 2021-10-07 5,207 Crossdresser Shemale Fucks Guy cum in mouth
100%
My Girl Friend and A Shemale
I walk up to the door of my girlfriend’s apartment. As I start to slide the key into the lock, I can hear slight muffled noises from inside. As the door slowly opens, I am met by the sight of my girlfriend laying with her legs spread wide open on the couch and her super sexy friend Shayla, w... Read full Story
tgirlloverme 2011-09-07 7,550 threesome shemale oral
80%
Ladyboy Loves Up The Midwest
When Jasmine, a Thai ladyboy, moved into a small town in Iowa the locals didn't know what had hit them. She was instantly the talk of the town; initially for being so different and exotic but once she opened her club her reputation spread right across the county and state line. It was only a real... Read full Story
shemale lover 2011-10-08 6,190 Blowjob Ladyboy massage
92%
Domination Fantasy
I wake out of a daze to feel water running down my body. I am somehow naked and i dont remember going into the locker room shower or taking my clothes off. The last thing I remember is meeting this beautiful girl named Crystal at the game and her getting my drink from the concession stand. "... Read full Story
KevinKraven 2012-09-13 7,854 Ebony domination
100%
Proud To Be A Sissy Chapter 1
I had just turned eighteen and only had two months of high school left. My marks were good and already had a possible placement in a university where I hoped to get a new start. I was so looking forward to getting away from all the shit that life had forced on me in this little hick town. Usuall... Read full Story
shemale lover 2012-12-23 11,886 Stockings Crossdresser Big Cock ass fucking ass licking
100%
1st time with Thai shemale
So after months of crosssdressing , camming and phone sex i finally decided to have a meet. I found a lovely Thai shemale on birchplace and went to see her in London. She was gorgeous and put me at ease straight away. After a few minutes of massage she started licking and sucking my nipples, then as... Read full Story
Nutcracker29 2013-04-09 9,250 first time suck Shemale Fucks Guy Asian big boobs
71%
White fuckslut Tgirl & 3 BIG BLACK COCKS Initiation
You lucky, slutty BBC Tgirl fuckslut, I envy you soooooo much. This is the most erotic and best BBC story on this web site. Pleeease keep writing about your BBC fantasies. What a bargain to get gangbanged by about 30 big black studs for only 15 Euros. I loved it when you begged them to fuck you.\r\n... Read full Story
TgirlJill4BBC 2013-06-03 6,012 Stockings Cumshot Big Cock gangbang Lingerie Interracial Latex
82%
Dick And Ass
I don't have this kind of sex often, I feel like it's wrong to want this, wrong to crave this so badly. I am by no means a sissy or a gay man. I have a wife a family.... I just need it the domination the surrender of all my will and being, the first thrust that hurts so fucking bad when it... Read full Story
JustaSwitch1 2016-06-15 11,525 Shemale Fucks Guy oral domination bbw
100%
Lucky to be insatiable...
I reached down to you with both hands and you grabbed them with your slightly trembling, soft hands. I pulled you to your feet and draped your long coat over your shoulders. I put my arm around your shoulders and walked you out of there. As we passed the clerk on the way out, I tossed him a few bil... Read full Story
coldasicefire 2018-03-12 3,043 Bareback threesome Shemale and Girl domination
69%
TS Fiorella in Frankfurt
Recently I was visiting Germany for a conference. I was staying in the city close to the train station and checked out the red light district nearby. Walking through the red light district is an experience, on every corner and many places in between there are multi storey brothels where you can wan... Read full Story
xanykeyx 2019-10-24 11,323 Shemale Fucks Guy Ladyboy tgirls frankfurt crazy sexy
50%
Me & Jo Shemale
Yesterday Jo Shemale and I went for on a pussy hunting fall walk. Well, I did, I'm pretty sure Jo Shemale wasn't hunting pussy. It was getting colder, so we had to put on our woolly panties and sweaters. Halfway down the block, we saw the Old Fuck's out in their yard. The Old Fuck's were raking b... Read full Story
shemale lover 2011-08-16 4,584 cock suck shemale
63%
Domination Island Part 5
The man who belonged to Serena woke with a start. It was dark and very warm and he was covered in sweat. Another nightmare, another recurring hellhole. These dreams were all the same. Beautiful women running at him and he was unable to move. And they all had enormous penises, rock hard and drip... Read full Story
shemale lover 2011-09-24 25,991 shemales Lingerie domination
50%
Domination of Bjarne
Dear Diary. At the behalf of my lover Bjarne alias Cigar54, I will ease the curtain of my bodouir and invite the curious reader inside to a little piquant seance that we had together during his recent visit over here. Bjarnes visites always begins with kissing deeply, while my hands find the way to... Read full Story
Louice 2018-03-02 3,316 Amateur Shemale Fucks Guy domination Ass to Mouth
100%
A Big Celebration that goes sides for me
I'm reading my book when she enters. I hear a clatter of keys and I look up, to see framed in our little entry way the tall figure of my roommate. She's standing there as in triumph, legs planted apart, her face all smiles. I smile too. Geena never looks this happy, I've never seen this side of her.... Read full Story
ASSEaster5678 2018-09-14 3,720 Ladyboy party Surprise
88%
Tommy Tries to Make It Up
Tommy Tries to Make It Up I have written about Tommy before. He was the eighteen year old neighbor that always stared at me checking me out, basically eye fucking me and that made me so hot and horny I eventually took his virginity and trained up on being a great lover. Well he had moved out... Read full Story
pennypenny 2019-04-30 6,191 Crossdresser Group Sex Bareback Creampie threesome Blowjob Big Cock redhead Guy Fucks Shemale Ass to Mouth
87%
Melissa
I'm a Japanese in my early forties living in Japan and I met Melissa online about a year and a half ago when looking for someone to chat. She is a black, 6 feet 2 inches tall, around 160 pounds and therefore a slim and beautiful transgender girl in her mid twenties. From Brazil, she is very friendl... Read full Story
cttyy 2020-02-24 15,439 Shemale Fucks Guy threesome Big Cock domination cum in mouth double anal
25%
Fantastic threesome w/ Miranda Pinocchio & Danielle Albuquerque
Today taken by the craving for something really big I call Miranda who answers me immediately and despite the language barriers and her way of speaking not always understandable we agree for 70 and a quiet thing. I sling in Naples, central area, the usual low in the alleys between via Marina and the... Read full Story
RonWisley 2020-05-04 4,674 Amateur Cumshot Shemale Fucks Guy threesome Blowjob Big Cock
33%
My new Experience with Amy Cute Shemale in Pune
Hi friends i am back with new story. I am mad shemale lover. and keep on finding new shemales for me. This time i got new website to search for shemale www.massagerepublic.com I saw an advertisement of Amy and i liked her. called her and fixed appointment. went to her hotel, which was ok ok ... Read full Story
Stud4Shemale 2021-02-20 6,114 Cumshot Bareback Creampie Shemale Fucks Guy Blowjob Asian Guy Fucks Shemale shemale fucks man man-fucking-shemale Indian Shemale Pune
100%
I’m not Proud to say it, but I fuced “Mac” in the Ass!
Yes, I Fucked Mack in the Ass and I’m not proud of telling this story. Even to this day I regret fucking him, but it felt so dammed good. My relationship with Mack started out with a blowjob, this homosexual motherfucker was good at what he did. I’m innocent, I’m green, not knowing that getting my d... Read full Story
lkusex 2021-05-28 3,067 Blowjob domination Guy Fucks Shemale
38%
From Gloryhole Peegasm to Shemale
I was in a porn video booth. I young guy stepped into the next one. I was already jerking my small dick, but he didn't even pull his pants down. He asked me if I wanted my dick sucked. Actually I think he said something like, "hey, let me suck your dick." Recently I had let some weird, ... Read full Story
shemale lover 2011-08-18 16,430 asshole shemale jerking off
80%
First time shemale encounter
Lets start off by saying this a very true story, one that i love to re-live over and over. lets begin I was in el paso, texas..my girlfriend at the hotel. Something in me decided to go to the strip club. So i did. After a few dances, i decided to leave. I had always heard in mexico it was very ea... Read full Story
iloveshemales112 2011-12-17 9,430 Latina Bareback Shemale Fucks Guy Big Cock