Someone's definitely played Knifey Spoony before.
This (unfortunately vertical and loud) video comes to us from Patos, Brazil and features a knife-wielding drunk monkey who apparently chased everyone out of a bar after knocking back a glass of unsupervised rum and stealing a kitchen knife, before fleeing to the roof where he repeatedly stabbed it to show that he meant business (and not just the monkey kind).
The local fire department had to be called eventually and the monkey was disarmed and removed from the bar, and he will likely now remain in captivity. Probably because this is how the world ends and 'Planet of the Apes' begins and Brazil know it.
Via Uproxx