Dry Swimmer

Okay, you smooth-brained joke author. Here's the deal: you're trying to be clever, but you're falling flat. A dry swimmer is just, get this, a swimmer who's not in the water. It's a simple, dumb observation, it's like saying a non-flying bird is not in the air. The humor's in the obviousness, but you did not deliver it correctly. Maybe try telling a knock-knock next time.