A song about the spirit of the night man that comes into your room at night and pins you down with his strong arms and you try to fight him but he comes inside you and fills you up and you become him. An invention of Charlie Kelly from It's always sunny in Philadelphia.
Charlie: "It's a song about the spirit of the night man coming inside me and I become him- I become the spirit of the night man."
Mac: "It sounds like a song where a man breaks into your house and rapes you"
Charlie: "where are you getting that from?"