doofus 

some one stupid.
from the word doof which is german for "stupid"

oh mai gard ur such ay doofus

doofus by Dux00rs July 11, 2004

doofus 

someone totally stupid, dumb and clueless (zong)

omgsh that zong is such a doofus

doofus by Yummy girl asia December 11, 2006

Doofus 

You

You are a doofus

Doofus by Shrek the Justin March 26, 2023

doofus 

A total fucking idiot

doofus by Christy February 12, 2003

doofus 

A big, slow, dumbass

see also Homer Simpson

doofus by Anonymous October 25, 2003

Doofus 

Idiot, doesn't know what the hell is going on.

Max Rogers, Keith Carr, Amanda Meek, Alana Oliver, Kameron Bacon and a whole lot more peoplez i know are all doofuses

Doofus by Classy Angel September 14, 2012

doofus 

One who behaves in an irrational or immature manner

Don't be such a doofus!!!

doofus by Splenda June 21, 2001