血证

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.

证 = 正 + 讠 : James II of England (zh) is not allowed to stay any longer in the engine, so in the bathroom ((e)ng4) he forges a visa (证) so he can stay. On an advertising column (讠) he scribbles his fake visa, but (like me) he sucks at drawing, so he is only able to draw a stick figure (正) where his photo should go.