Anyone here done this to someone?

I worked with a guy who always put his fruit peels in the trash can of my cubicle instead of his own. I didn't like smelling them by the end of the day, but didn't say anything as he was a few levels above me...

After transferring to a different department, I had to return to pick up my paycheck the day before christmas break started. That's the day where you work a half day and everyone brings a dish for the office party... I arrived after the parties were all over and everyone had left, but saw in one of the conference rooms that there was a bunch of left over food.

So I took one of the peel-n-eat shrimp off of the tray and put it in the Kleenex box that he kept on his desk to ferment until he came back to work after New Years....