1. A person who is completely clueless about how stupid they look and act.
2. A person who is an asshole and an idiot.
4. Some one who usually tries to screw people over but are too ignorant to
accomplish it.
3. Related to the phrase "
dumb as a door knob", except
the person is also an asshole. They are a "fuck knob."
Synonyms: Dumbass, Moron, Idiot, Retard, Fucktard.