Really.
The monkeys that live in the apartment above us are horrible creatures. As I type this, currently they are having some sort of hysterical laugh-a-thon while supposedly chucking tennis balls against the wall. Some of us are trying to nap. I mean.
However their favorite 1am activity is some sort of furniture moving and screaming/dancing contest that lasts 4-5 hours depending on how fun it apparently is. Every other day.