Here is one for the mentaly retarded

A sailor walks into a bar and asks for a drink.

The barman looks at him, and notices that he has an extremely small head.

"Pardon me sir, would you mind telling me what happened to your head?"

"Well, I fell in love with a merdaid, and as we cold not make love, I asked her one day for a "little head then". And this is what I got.

I hope you understand this one

Well, my spelling is pretty good. ("mentaly retarded"?) I also type pretty good. ("merhaid and as we cold not make love?) I guess I didn't have the advantages of your education!