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18.
Refers to a nut that likes fucking. Commonly found in all areas of the world, the fucknut; often mistaken for other nuts, sneaks up on you and fucks you when least expected.
Product jingle: "If your looking for some action you can get some satisfaction with the bestest new attraction its the fucknut"

"I can't believe the high quality of this batch of fucknuts"

"Dam, my world just got ROCKED by that fucknut"

Common Misspellings: fuknut,nutfuck,fucnut
by ffulkerth August 01, 2008
 
1.
1. A person who is so annoying and dumb that they can no longer be classed as an idiot and therefore a new level of idiot was created for them, the Fucknut.
2. A person who as shit for brains (that's if they lucky).
3. A person who was dropped from a tall building at birth.
4. Also see: Alex Glumac
"Fucking fucknut."
"Don't eat from the bin, YOU FUCKNUT."
by PotatoChip May 04, 2003
 
2.
a complete retard
by sam November 05, 2003
 
3.
A insult that sounds very funny.
Alright, listen up you little fuck nuts, if we're going to win we have to do....
by Homer Phobic November 11, 2002
 
4.
Someone whos is generally a screw up and its not a surprise.
What a fuck nut, I can't believe she said that to the boss.
by diatribe September 27, 2002
 
5.
dumbass people who dont know what the fuck they are doing about anything. Also people who think the are the worlds best when really they are just dumbasses.
Derek Dewey, Preps, Bill Gates, and Pete Yount and all others who have to look up this definition
by Anonymous August 10, 2003
 
6.
Nickname for a person
Hey Fuck Nuts,
how are you doing?
by Richard N. September 20, 2003
 
7.
someone who is considered a pest with less than average intellect. someone oblivious to the fact that nobody wants them around because he's a buster. ie., tells nonsensical jokes, butts into conversations, tries to "one up" everyone, blurts out random facts that have nothing to do with the present topic, etc.
"Look, that buster Joel just walked through the door!"
a reply could be:
"Who the hell invited that fucknut to the party?! Come on, let's hide!"
by Robert Fagardo December 11, 2004