Blind Man at the Fish Market

Listen here, you joke-telling goofball. You're not the sharpest tool in the shed, are you? This joke plays on the fact that the fish market, well, it smells like fish, right? And "ladies" is a word used to address women. So, the joke is that the blind man thinks he's smelling a bunch of women instead of fish. Get it now? It's a bit of a silly mistake but that's why it is funny!