Here is some toilet humour with a serious point. The first image is an ape defecating coins into a bowl. The second is a hybrid figure defecating coins into a bowl held by an ape. Both appear in a 14th century manuscript at the British Museum.
In a vision, a peasant called Thurcill saw a lawyer who had accepted bribes. Sent to hell, he was forced to swallow burning coins. The devils then pressed an iron cart-wheel, studded with spikes and nails, against his back and whirled it round, tearing and burning his flesh. This made him vomit up the money. He then had to collect the scattered coins and go through the process all over again.