假证

假 = 亻 + 叚 : Rosa Luxemburg and Joan of Arc want to go on vacation together, but they already used up all of their vacation days. That's why for the upcoming eye examination in the ashram's bathroom, they put in some glass eyes so that they will get a sick leave.

Mnemonic symbol: a fake eye, 假眼

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.