術語

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

In the space station's bathroom (Ø4) the surgeon (术) wants to tickle Sheldon Shrimp (shu) with a petal (丶), but Sheldon thinks it's a trap and he wants to cut him open, so he hides behind a Christmas tree (木).

语 = 吾 + 讠 : Yu the Great is seeing some language advertisement on an advertising column in the space station. She decides to paint a big mandarin colored pentagram over the language ad.