足赤

足 = 龰 + 口 : Mnemonic symbol: a football. Zapatista Zebra (zu) wants to pimp his football (足) in the space station's kitchen (Ø2). He thinks that a few more vitamins wouldn't hurt, so he extracts the vitamins from a mandarin (口) with a syringe (龰) to inject them into his football.

赤 = 一 + 亦 : Mnemonic symbol: a red letter.

Charlie Chaplin (ch) finds that the also-ran (亦) ran over his flute (一) in the space station's bathroom (Ø4) bare-footed (赤). Angrily he gives the also-ran a red letter (赤).