Monkeys are a little too close to humans for comfort. They look kind of like us and, unfortunately, act kind of like us. Monkeys have been known to seek out high-value items and steal them, even holding them for ransom until a tourist gives them enough bananas for them to give up their iPhone. Now, it turns out that they engage in another all-too-human behavior: the knockout game. Watch and be wary of any monkeys with bad attitudes.