The fastest reader

Who's the fastest reader?

Me, 'cause I'll be jumping off so many stories.

Explanation

The joke plays on the word 'stories.' It uses the double meaning of stories as narratives and stories as floors of a building. The punchline implies that the speaker will be jumping from a tall building, which is a way to rapidly go through multiple 'stories'. It's a dark and self-deprecating way to imply suicidal thoughts by twisting words.