From Wikipedia:

A Caganer is a figurine depicted in the act of defecation appearing in nativity scenes ... The name "El Caganer" literally means "the crapper" or "the shitter". Traditionally, the figurine is depicted as a peasant, wearing the traditional Catalan red cap (the "barretina") and with his trousers down, showing a bare backside, and defecating.

This is bringing me far too much joy.