If it moves, it's Bio. If it stinks, it's Chem. If it doesn't work, it's Physics.
Picture of a lemon battery with the caption "if life gives you lemons...make a crude battery".
picture of a cupboard with porcelin bowls about to fall and break. The only thing holding them in place is the cupboard door being closed. The caption reads: "Schrodinger's Cupboard. The bowls are both intact and broken".
A cartoon drawing of a child with a tall, blue paper bag hat and a cape holding a cookie. The child is squatting down, examining the cookie and the caption reads "I will do science to it"
A cartoon stick figure of a scientist with a caption that reads "Stand Back! I'm going to try SCIENCE!"