The teacher was lecturing everyone about why we lost free seating (we were leaving a mess behind) and I had a sudden joke in my head, so I raised my hand. "Yes, Gordon?" He said. "I'm all about cleaning up before I go, but we need to create a mess so the janitors have a job! We're helping the economy." I said it in an obviously joking manor, not exactly like that but pretty close. "Oh, well if you think like that then clean up our table for the rest of the week."
Before we go to lunch, I walk up to him and ask him why I had to clean up for everyone's mess.
"Because that was the most disrespectful thing I ever heard you say, some janitors enjoy their jobs. The last thing they need is a punk like you making fun of them. Any other questions?"
"No, sir."
"Good."
I never made a mess at the cafeteria before in all the time I've been to school, so I think the teacher is just being an starfish.