You go for a tall, gangly slacker with long greasy hair and pants that are already falling down because of his lack of a belt. You yank in his pant leg, and miraculously (or not so miraculously) they come off.
"Hey, jerkoff! Get back here!" he yells, as you bolt off with the pants and even more laughter erupts in the cafeteria. "Don't force your mom to do another free job for me as repayment!"
What should you do?