The first man said, "Please excuse me for staring, but I can't help but be curious as to why your body is so well developed, but your head is so small?"
The man said, "Buy me a drink and I’ll tell you."
The drink was ordered and the story began. "I was in the navy and my ship was sunk by a torpedo. I was the only survivor and I managed to make it to a deserted island a few miles away. I had been there alone for several months and was sitting on the beach one day waiting for a bird or fish to come by so I would have something to eat, looking up I saw a beautiful mermaid sunning on a nearby rock. She swam over to me and informed me that she was a magical mermaid and could grant me three wishes. 'Great,' I said. 'I’d like to be rescued.'"
"She slapped the water with her tail and a ship appeared, sailing straight for my island.
Next I asked for a body like Charles Atlas. Another slap of the tail and here it is.
Then, noticing how beautiful she was and all my other wishes fulfilled I asked if I could make love to her. She said no that it just wouldn't work her being half fish and all. So I said, 'Well, how about a little head then?'