A Little Head

A man walks into a bar and notices the gentleman next to him has a very small head. After a few beers, he finally asks the gentleman, "Pardon me, but why is your head so small?".

The man began to explain how he was in the Navy and after his ship was struck by a torpedo, and he was stuck on a deserted island for months. "One day," he said "A mermaid magically appeared. She said she could grant any wish I had. I asked to be rescued, and off in the horizon, I saw a coast guard ship heading towards me. I then proceeded to explain how long I had been stuck on the island and asked her for some sex before being rescued. She explained that it was impossible since she was a mermaid. So instead, I asked her for a little head."