Kitchen Pranks part deux

I told the new kid, go in the basement and get me a can of something. You see, we do not have a basement. It was funny as hell watching him walk around looking for an entrance.
Heres one we do on the line: Take a piece of rolled up paper towel, light it on fire and throw it at someones feet....during service. Now you can see that they CAN move faster.
Drain the water out of the coffee machine. I love that one.
Freezing someones clothes.
I take a third pan fill it with water and freeze someones knives in it,handles out of the water. After freezing fill it up with water, now it appears the knives are in a third pan of water. When that person picks up their handle the whole pan goes with it.
Coating the handle of a knife with chocolate sauce. Helps if the knife is a black handled one.