A dumbass. A person of questionable intelligence, usually a male for obvious reasons. If reason is not obvious, perhaps you are a numbnut.

Correct spelling of numnut. Normally used as an insult meaning idiot. However, also implies that the recipient is a coward, sterile or impotent. A combination of numb and nut, where nut is a slang for testicle. In other words, a man who cannot feel his testicles and acts accordingly.

This word originated in the U.S, however, it's used in the U.K. as well. Most likely its use was born in the U.S. military, just as expressions like soup sandwich and jeep. Made popular in the movie, "Full Metal Jacket," when Hartman yells at Pyle.

someone who is not only as stupid or rather idiotic, but also unintelligent or a complete fuckup

a useless person or a useless thing

A retarted male who has been castrated so that he will not rape a girl and produce another retard.