Leave to 'use the bathroom' and hope she gets the hint.
From Create Your Own Story
You go to a bathroom down the hall and make sure to leave the door open just enough that an inquisitive admirer could easily peek inside.
After a few seconds, you pull your cock out and stand in front of the toilet, pretending to piss.
Sure enough, you hear an excited gasp from the hallway, right outside the door. This was the reaction you were expecting. Even when soft, your cock is humongous -- and the reason you got the nickname "Horse" on the football team. It doesn't hurt that you're pretty filled out from all the excitement of playing with Kara. Your fat dick hangs low, a good 6 inches over a equally fat pair of nuts. And it will only take a few tugs before it gets to its full 9 inch length.
