by The Beer Baron October 08, 2004
A numbnuts is a person of 'a certain age', i.e., old enough to know better, who behaves like a total shit or shithead. A jerk, a fool, a putz, schmuck, asshole, etc.
Mike and Louise behaved like complete numbnuts over that issue. They got mad and over-reacted, just like the numbnuts that they are.
by Athelstan Spilhaus IV September 10, 2006
by Italian Stallion November 17, 2004
This word is Self-Explanatory
by Stu August 13, 2004
by Red December 14, 2003
A person of such dim wittedness, that if you punch them really hard in the nads that they don't flinch.
by bikerspice July 10, 2003