Into your mouth

You hold Jessica’s cock in your hand, the circumference of it so wide you can’t even fit your fingers all the way around it. You stare at the drop of piss clinging to the tip of her cock, and consider shaking it off into the toilet but it just seems so... wasteful.

“Marcus, you disgusting pervert! Do you have a boner?” Jessica laughs.

You look down in surprise. You hadn’t even noticed you’d become erect. Not that you’re attracted to your sister or anything. It must have just been the smell, you think. There isn’t any boy you know who wouldn’t become slightly aroused from just being so close to such a huge futanari cock.

And yet... you just can’t take your eyes off of it. Without really thinking about it, you look up into your sisters eyes and shake the piss off onto your eagerly awaiting tongue. It tastes so fucking good.

Jessica stares down at you, her mouth gaping open in a shocked o-shape.

“Marcus! You little virgin slut!”

You close your mouth in shame, but you can’t seem to break eye contact or take your hands off your sister’s throbbing cock as you swallow the bitter fluid in your mouth. You just couldn’t help yourself, but you know there’s no way you’re getting away with this scot-free.