Dad Man's Career Change

Listen up, buttercup. This one's for the brain-dead like you. It's an anti-joke, meaning there's no real punchline, you knucklehead. The setup implies there's a reason 'Dad Man' quit acting, but the answer is just 'I don't know.' It's supposed to be unexpected and dumb. And judging by your interest, I think you're just as dumb as this joke.