Becca and I had a good thing going. We had been dating for about a year, and I still got excited every time I saw her naked. Her parents liked me, her mom even dropping not so subtle hints about rings being excellent Christmas presents. They even left us in charge for her sister Stacey's 18th birthday party. "Nothing too wild, just nothing we need to know the details about."
I was more than happy to provide the booze for Stacey's party. Becca was always in the mood when she drank. I set up the tunes, making sure not to let too many Christmas songs into the mix. Stacey hated having a birthday so close to the holidays. I had to laugh to myself as some high school classmate of Stacey's was trying to pick up Becca. She played along some, then challenged him to a drinking game. If he won, she would let him grope her tits. If she won, he would have to kiss his friend. My girl hasn't the Tri Zeta beer pong captain for nothing, and the poor guy never stood a chance. He left humiliated, defeated, and puking into his friend's mouth when he tried to pay off the bet.
It wasn't long after he left that Becca leaned in to me. "I'm so wasted, Babe. I'm going to go lie down. Wake me up when you're done with the clean up. I've got an early Christmas present for you." The price of victory, and Becca had been hinting I might be getting some back door action. The night was going better than I had hoped.
Stacey helped with the clean up, after the last of her friends had departed. "I really wanted to thank you for this, Brad. This was a great birthday."
"Oh, sure. It was my pleasure..." I was cut off as Stacey suddenly kissed me. Her breath was sweet from peppermint schnapps, and her hands pulled my body against hers. I lingered for just a moment before pulling away. "Mistletoe, silly" she said with a giggle. I looked up, and sure enough we were right under some.
"Alright, birthday girl. I think you need to get to bed."
"I suppose you're right. Care to join me?" She placed her hand on my rapidly hardening crotch and kissed me again, deeper this time.
"Stacey, what are you doing? We can't do this..." Her aggression really took me by surprise, but not in a way I didn't enjoy.
"Sure we can Brad. Becca's passed out. And I've been listening to the two of you fuck so much, I know how you like it." She undid my belt and started playing with my cock. "I'm tired of boys. I want a man who can make me scream like Becca does. And you know you want my tight little pussy. " She pulled my pants down, then dropped to her knees as she freed my cock. "You seem to like it when she does this." She opened wide and started sucking on my raging hard on.
"Oh, god, Stacey. That feels so good. But we can't..." She didn't believe my protests, and at this point, neither did I. Fuck it, I'm only human, I decided. I pulled her top off, and she stopped sucking my cock long enough to let it free so I could see her tits. She rubbed them along the length of my shaft before standing up and stepping out of her skirt. I kissed her deeply, and pushed her on to the couch. I pulled down her panties, and started to devour her pussy. Her slit was so wet, and she began to moan as soon as my tongue parted her lips. I licked and started to finger her, marveling at how well she responded to my touch. She bucked and moaned, grabbing my head and ordering "Fuck me Brad."
She rolled up on her knees, and leaned forward. My dick filled her instantly. Oh sweet sin, her cunt was so hot and wet. I grabbed her hips and began to fuck her. "Oh yes, fuck me Brad. Fuck me hard." And fuck her I did. I pounded that young pussy for all I was worth. This had to be a one time only thing, but damn was it a good one time.
"Oh, fuck, Stacey. I'm going to cum. I'm going to fill your pussy with my seed. Oh fuck..." I shot my load deep in her, pushing my cock even farther as she came with me.
"Brad, what the fuck?" suddenly I snapped back to reality as a very naked, and very angry looking, Becca stood next to us.
"Like that sis. Your boyfriend just shot a hot sticky load all inside your baby sister. God that was good."
"It's not what it seems, Becca."
"Not what it seems? You didn't just fuck my drunk 18 year old slut of a sister? Get out. Get the fuck out of my house. I never want to see your face again. And just you wait until I tell the Tri Zetas what you did. You won't be able to find another pussy for 100 miles."
I grabbed my clothes and ran home. Fuck, what just happened? Did I really just fuck my girlfriend's sister? Then my phone started pinging. "Asshole." "Dick." "You're lucky we don't call the police." Fuck, Becca made good on her word quickly. I decided to just crash at the frat house, and let this blow over.
Blow over it did not. My frat brother Matt, a med student, woke me up. "What the fuck did you do, dude? At least three of your brothers are being cock blocked if they don't renounce you."
"Shit, Matt. Stacey grabbed my cock last night, and wouldn't let go until I fucked her. It was all her idea, but Becca wouldn't even listen. I tried to stop her, but you ever tell a girl no when she has your dick in her mouth?"
"That's rough, bro. We have your back, but you can't be seen here right now. My parents went skiing for the holiday, why don't you crash with me there? I don't have a girlfriend to cockblock me,"
That day, I was destroyed on social media. Becca's page was full of hate, and I got spammed with more of the same. I went from about to take Becca's ass to becoming public enemy number one in a single night. So, like any reasonable college student, I started drinking. Matt and a few friends who wouldn't get in trouble with their girls came over, and we drank. It was right before Christmas, so we made a batch of eggnog, and got shit faced. We talked about family traditions, and I decided to write a letter to Santa. Matt even found crayons for me to do it in.
"Dear Santa,
I know I've been naughty. But I could really use a new vagina.
Pretty please
Brad."
I put in an envelop marked North Pole, and passed out under the Christmas tree.
I woke up to the jingle of bells. I opened one eye and saw black boots, and red fur.