{you} were used to {your sister}'s antics. She loved to dress as provocatively as possible, and there had been multiple times in the past week when you had barely been able to stop her going outside completely naked. You had asked her in your shared room if she was properly dressed, but now you were in the kitchen you shared with two other people, she wanted to show it off to you.
"{your sister}, if you keep doing that, I'll knock you up." You say, half jokingly.
"Ok, {you}, I will." Your sister leans over again, this time pointing her cunt directly into your crotch, then moves back, grinding her naked, sloppy pussy into your bulge.
Your dick hardens as you feel her delicious folds caress you through the denim of your jeans. You could so easily fold her over the countertop and fuck her senseless.
