Welcome to the bizarre Catalan tradition of caga tió or 'defecating log'.
Locals in Catalonia create a character out of a log, drawing a face on it and giving it a hat. Then they spend a fortnight 'feeding' it fruit, nuts and sweets.
On Christmas Eve, the entire family beats the log with sticks and sings a traditional song that translates to 'if you don't crap well, i'll beat you with a stick' until the log excretes all its treats. It's hard to comprehend why this tradition hasn't caught on elsewhere.
They also decorate their nativity scenes with small, pooping, ceramic caganers (figurines). Usually well-known characters, often drawn from that year's news, the figurines always have their pants around their ankles.