衄

丑 = 二 + 刀 : Charlie Chaplin (ch) finds a very ugly (丑) ox (丑) in the outhouse (ou3) and decides to destroy it with a cleaver (刀) because it is so ugly. He'll soon notice that the ox has been hooked up to a charged capacitor (二) so that anyone trying to damage it will be shocked.

血 = 丶 + 皿 : Mnemonic symbol: blood transfusion.

Xu Xian hurt himself and needs to get a blood transfusion in the elevator's bathroom. He found a petal leaf as donor, which is bleeding droplets into a bowl; Xu Xian gets the blood from the bowl as infusion using some tubes.