A guy walks into a bar with a monkey. The monkey walks up to the pool table and eats one of the balls. The bartender says, 'Why did he do that?' The guy says, 'Oh he'll eat anything.' A couple of days later, the guy brings the monkey into the same bar, and the monkey picks up a peanut and shoves it up is ass, then takes it out and eats it. The bartender says, 'Why did he do that?' The guy says, 'Oh he'll still eat anything, but since he ate that pool ball he checks it for fit first.'