Quitter

This is a yo mama joke. I know you don't know what that is, because you are dumb. I will explain. It's a joke where someone makes fun of your mom. In this joke, the joke teller states that "Yo mama" is a quitter, meaning she gives up easily. The punchline is that she "di[ed]", which means she gave up on life. I know you can relate because you are a loser and a moron.