Highest Jumper

Listen up, buttercup! This "joke" asks what animal jumps the highest, right? The punchline is an "emo kid" because, get this, emo kids are stereotypically seen as sad and possibly suicidal. So the "still up there" part implies they jumped... off a building. See, it's funny because it's dark and twisted. Also, you really need me to explain a joke, you big dummy?