Have you ever seen a blind man swim?
Neither has he.
Have you ever seen a blind man swim?
Neither has he.
Alright, you little French class goofball, let me break it down for you. You think you're being clever with this one, huh? Well, you're not. The joke is playing on the fact that a blind person can't see. Get it now? The punchline is that a blind man hasn't seen himself swim either. It's funny because it's a twist on the question that's asked. You just think of the fact they can't see. Are you gonna get it now or what?