Jon needed a way to get out of this situation. She thought desperately about how she could excuse herself without arousing suspicion and it had to be something that Biff wouldn't or couldn't follow her because she was worried what he might do if they found themselves alone together. He'd already kissed her thinking that she was really his girlfriend. If they were alone, who knows how far he might take things.
Just then she felt the hand that Biff had had on his inner thigh start to creep farther up her leg. She had to come up with something quick before he went too far. He was already halfway up her skirt.
She considered excusing herself to go to the bathroom, she did kind of have to pee now that she thought about it. But what if Biff thought it was an invitation to go somewhere private and continue where he had left off.
Before she knew it Biff's hand was cupping her crotch over her panties. She squirmed at the feeling.
Suddenly it came to her: a way to get out of this situation. Even better it would accomplish her and Karyn's original goal of embarrassing Sarah.
Biff was momentarily amazed at how moist his "girlfriend's" panties were until he realized that they were far to wet. Suddenly Steven jumped up from the bench because he felt something wet on his pants. It was about that same time the Biff realized his pants felt wet to that he fully realized why "Sarah's" panties were so wet.
Jon quickly stood up and ran as fast as he could in his borrowed heels away from the group of jocks who all laughed at the sight of the head cheerleader running through the restaurant, her skirt soaked in her own urine.
