Suggest a cum race between you and Adam
From Create Your Own Story
You say "Adam, as we're both halfway there, let's see who can last longest! If you're not chicken shit, that is?"
"You're on, dude!" He says then stands up while tugging his cock. His cock is average length, considerably thinner than your own horse-sized appendage.
It's hardly fair, as you have his hot sister doing the work for you, but you stand up, too, and then Kara giggles before starting to pump your hard member again.
She looks at you both, and says "Get set, go, boys!"
The whiskey really has loosened you all up, and you hear Adam grunting and then you notice him looking at his sister. He says "Ha, you'll make him cum before I do. I've already won this one."
A thoroughly drunk Kara then says, "You're right, not a fair contest! Hang on." Then to your extreme surprise, and Adam's, she grabs her brother's cock with her free hand and starts jerking him off, too!
She looks up at you both as she kneels down in front of you, and says "Who's got the stamina, boys?"
You think how hot this actually is but Kara's tight grip around your cock is amazing and you just let her jerk you and her brother while you moan like fuck at how good this feels.
Adam says "Sis, you can certainly handle a cock!"
After a few minutes of this erotic act, Kara says "Time to take it up a notch, boys!"
You wonder what she means, until she starts flicking her tongue around the head of your cock. You let out a moan of pleasure as her tongue sends electricity through your dick. Then she stops, and starts licking her brother's hard cock, causing him to groan loudly "Oh, yes, oh yes. Just like that, Kara"
She then returns to your cock and starts sliding her mouth up and down your pole. You don't know how you can contain yourself! Then she gets off you and starts giving Adam a furious blowjob while tugging your cock with her hand. You two guys are in full throes of sexual thrill as little Kara pleasures you both.