Laughing, Biff kicked in the bathroom stall, knocking the invisible Karyn right on top of Jon's exposed member. John tried to straighten her and get her back on her feet, but just sort of fell backwards himself.
Biff, true to form, raised his fist and, with no small amount of glee, was about to make contact with Jon's right eye socket, when he felt something reach up and touch his knuckles.
"What the hell?" started Biff as he felt the world shift around him, and then jumped as he heard his own voice. The pitch was off and sounded like a little kid. That, plus Jon seemed to be growing.
Biff backed up, but found his jeans slipping down his legs and himself almost tripping over them. He started to scream, but was instantly muffled by his own shirt, now an enormous tent all around him.
"Oops," said Karyn, stiffling a laugh.
"That was maybe a bit much," said Jon, looking down at the pile of the clothes and the tiny lump that was moving beneath them.