Absolutely nothing

You forgot your gym clothes! This was the third time you’d done this this semester and you knew you were getting punished for sure. Coach Preda was a very strict woman and she said that anyone who forgot their PE clothes three times would get a very special punishment.

You leave the lockerroom and step out into the gymnasium. Your PE class is entirely female, aside from you, and you see all of your classmates dressed accordingly with Coach Preda standing in front of them. You walk up to join them.

“Hey!” Coach Preda yells, “What do you think you’re doing?!”

“I forgot my gym clothes,” you say, “I’m sorry.”

“Sorry doesn’t cut it mister!” she responds, “Come up here!”

You walk up to where she is standing and stand beside her.

“Ok class,” she says, “I know for a fact that this is the third time that this boy has forgotten to bring his clothes. So he gets a very special punishment today. He has to work out with us... naked!”