四
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儿
+
囗
:
Mnemonic symbol: a four-leaved clover. Socrates (s) is working out in the bathroom of the space station (Ø4). He's lifting four (四) wooden boxes (囗), and wonders why they are so heavy. He doesn't know that inside one of the four boxes, the monkey king (儿) is hiding and secretly laughing at him - until the monkey king comes out and surprises Socrates with a four-leaved clover (四).
Sherlock Holmes is about to lose against Santa Claus in a boxing match in the engine's bathroom when he uses a dirty trick: lying on the floor he grabs some dirt and throws it into Santa Claus's face, thereby blinding him. Sherlock uses the opportunity to land a critical blow onto Santa Claus's big belly, but Santa doesn't even notice.