A term used to describe preps & jocks that are oblivious to the world around them. Dumbfucks usually believe they are "the shit" and do not care to listen to other's opinions unless said opinion is concerning the looks of the "Dumbfuck" or gossip ...
<dumbfuck1>Look at the GOTHLICKS!
<dumbfuck2>OHMYGOSHNESS, how.... goth!
<normal1>& they call me weird? what a dumbfuck.