A complete asshole. One who makes you feel like shit. One who says the most stupid things; annoying. Can also mean you secretly love them.
"wtf is ur problem you whore.
God ur such a dumbfuck."

"you wore that shirt like two days ago.
Shut the hell up, you dumbfuck!"

"seriously, why do people go tanning?
well, you dumbfuck, to get tanner."

"ah cmon, dumbfuck..be my partner."
by Karlayyy. March 02, 2009
A name someone uses to make fun of someone else, suggesting that they are being stupid.
Girl 1- *Runs into glass door.*
Girl 2- "Nice going, dumbfuck."
by MIW,SWS, BOTDF September 29, 2012
A really stupid person
My brother Billy is a wicked dumbfuck
by DizzyLizzy September 04, 2007
Somebody born on accident as a result of the parents being dumb and not wearing condoms. "Dumb fuck" is an insult often used against stupid or ignorant people, or by ignorant people against people that are actually smarter than them.
1. Pi is actually 3.14.

2. SHUT THE FUCK UP DUMB FUCK.
by machonacho November 14, 2009
1. someone who puts a picture of him/herself in the definition for a word such as gangsta or pimp.
2. someone who writes a definition about a friend.
1. See the entries for gangsta, pimp, chav, shocker, etc. If only they put their pictures in dumbfuck, too.
2. Example definition for "brian"
The hottest guy ever. I love him :]
2a. Another example definition for "cool"
Something shirley is not.
by 340yhj3jh3=2qhnn September 18, 2008
Someone who repeats an action over and over again, expecting a different result"....
George Bush: 'how'bout i bomb this....yeah oil prices/terrorism..GUNS'...dumb fuck
by Jonny Howard October 12, 2006
someone who tries to define a word and doesn't even know how to spell "definition"
Who is the dumb fuck that doesn't know how to spell?
by kuntrysgirl December 30, 2005

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