Genie

A man six foot four with a head no larger than a grapefruit goes into this bar. He sits down and orders a drink.

After serving him the bartender cannot take his eyes off this guy's head. He finally goes over and asks him why his head is so small.

The man explains, that one time while walking on the beach he found this bottle and rubbed it and a beautiful Genie popped out of the bottle and offered to grant him one wish. He said he wished to have intercourse with her.

She replied that Genies were not allowed to do that. He then asked her if he could have a little head.