Definition of "doofus" [doo•fus]

• Slang An incompetent, foolish, or stupid person. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Apparently either one doofus is sitting in his/her parents 'basement cranking out this meaningless garbage under different names (just like during the' 08 campaign) or they've let the cat out of the bag by not realizing that now we know they're signing on to the same right wing 'instructional' website to get their assignment for the day!"
• "And this doofus is running for the president of the united states?"
• "That doofus is the former president of my university."