caguer

A vulgar regional verb for defecating, a coarse synonym of chier borrowed from Occitan cagar (the same root gives Spanish and Catalan cagar) — heard mostly in the south of France. Crude register, avoid in any polite context.

• Le chien a cagué sur le trottoir. — The dog crapped on the sidewalk.
• Il a dû caguer dans les bois faute de toilettes. — He had to take a crap in the woods for lack of a bathroom.
• C'est un mot qu'on entend surtout dans le Sud, jamais à l'écrit. — It's a word you mostly hear in the South, never in writing.

This is vulgar, regional slang, not a neutral verb — using it outside very casual southern-French speech (or with the wrong audience) will land as crude, not funny.