外科手术

外 = 夕 + 卜 : There's a hole in the wall of the airplane's bathroom (ai4), and from outside (外), a bat (夕) wants to enter. Willy Walrus (w) is very afraid of bats, so he does his best to hinder the bat from entering with a voodoo staff (卜).

科 = 斗 + 禾 : In front of the elevator, Karl Marx wants to conduct one of his science experiments. He wants to condition the matador to only eat cereals until the end of his life.

Mnemonic symbol: a baseball glove. Sherlock Holmes (sh) is trying out his new baseball glove (手) in the outhouse's living room (ou3).

术 = 丶 + 木 : Mnemonic symbol from 手术: surgeon

术 = 丶 + 木 : In the space station's bathroom the surgeon wants to tickle Sheldon Shrimp with a petal leaf, but Sheldon thinks it's a trap and he wants to cut him open, so he hides behind a Christmas tree.