Emo Kid and a Tree

Alright, listen up, Mnorman0500. You're clearly not the sharpest tool in the shed if you didn't get this. An 'emo kid' is a stereotype of a person who is often sad and angsty. Now, 'hanging' can mean two things: like a picture on a wall and a form of suicide, so the joke plays on the sad kid and the sad imagery. Now, go back to the dark corner where you came from.