A man was sitting in the bar when he noticed another patron a few stools away. The guy had a body like Charles Atlas, but his head was the size of a thimble. The first man said "Please excuse me for staring, but I cant 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 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, it just wouldn’t work her being half fish and all," so I said "well, how about
a little head then?"