Everyone in the story is over 18.
"Hey, bro" my best friend James said to me.
"Yeah?"
"We're about to have a contest" he answered, winking.
I took that as a hint to finish my drink. Feeling pretty good, I walked over with him to tell the other party goers.
James was hosting a party and they were known for being pretty wild. This time he was having a contest with the prize being two awesome crowns for the pair that won. Basically the guy got paired up with a girl, and the goal was for the girl to make the guy cum. The guy who came first along with his girl were the winners. Everybody who was competing got blindfolded, and James' parents would pick two names at a time randomly out of a hat.
They started doing this and when everyone was finally picked the party quieted down and the music turned off. The parents announced that this time it would be an oral competition. So we all got blindfolded and were directed to our seats.
I sat down and felt my girl lower down in front of me, her stroking my thighs to get me warmed up. The rules said that there was to be no other contact before the round started, though. When everyone was seated the parents told everyone to take their blindfolds off. When I saw the girl in front of me my stomach dropped. I didn't tell you that my older sister was invited to the party too.
We were both annoyed as hell and demanded a recount, and the room descended into chaos when people realized the mix up. There was some protest from a few contestants and some jeering from others but the rules were clear, you couldn't switch to another partner. I think they put that in there because the unattractive people kept getting passed on. They told us we could back out of the competition, though. I leaned in to my sister and asked her if she wanted to back out.
"No, I want that fucking crown," she told me. The prize was pretty kick-ass so we agreed to stay in and said we were ready to begin.
James' mom began: "When I say 'go', you may begin the blowjob."
I looked into my sister's eyes and could see her fierce competitive spirit. She wanted to make me cum.
"Go!"
Quickly she went for the button on my pants and then undid my zipper. I shifted in my seat and she pulled my pants and boxers off both at the same time. I was already at half mast from the anticipation and my sister got right into it. She grabbed my shaft with her soft hand and started stroking up and down. She looked me in the face and told me "I'm going to give the best blowjob you've ever had, little bro. You're going to shoot your cum for your big sister." Her dirty talk was making me horny and I started to feel incredibly good.
I looked around to see what the other girls were doing and saw some who hadn't started touching their guys' dicks yet but were busy taking their tops off.
"Hey, sis. Look what they're doing. Can you give me something to look at?"
From living in the same house and seeing her get up in the morning with no bra on I knew my sister had great tits. She stopped the handjob and began to unbutton her blouse and then finally slipped her bra off. She grabbed back onto my cock and started stroking again, which jiggled her tits up and down.
