A person who invents an unfunny and unnecessary word or phrase in order to submit it to Urban Dictionary as the lone contribution that individual will ever make to society, all in the vain hopes that said Dumbfuck will have started a word or phrase which will spread like wildfire among the English language.

The Dumbfuck typing into Urban Dictionary: "'Facebalking' means you are hesitant to put something on Facebook!"

Friend: "That is the stupidest word I've ever heard. Did you make that up just to put something on Urban Dictionary? You are a total Dumbfuck."

Dumbfuck by RealDangerFC June 14, 2011

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dumbfuck

what a girl dumbass and a boy dumbass did. it is their lovechild;

someone stupider than a dumbass;

if you still don't know you dumbfuck, it's an insult.

*a few dudes watching their dumbfuck friend about to go down a steep hill in a tire*
dude 1: this isn't a good idea...
dude 2: yesh it ish.

dumbfuck by love-bruises March 9, 2007

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dumbfuck

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.

dumbfuck by 340yhj3jh3=2qhnn November 1, 2008

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