The tiny ball of poo that comes out of a girl's booty while she is being plummeted by her man's "member" when she has to defecate. Can also be used to degrade someone.
After a long night of sex, I woke up to find a fuck nugget stuck to my sheets.
by parkylvr May 20, 2009

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A small piece of fuck, similar in shape and size to a gold nugget, but with a much more variable selling price. High-quality fucknuggets, such as nuggets of "supermodel fuck" can easily be sold for 7-figure sums, whereas low-quality nuggets, such as "ugly fat drunk fuck" nuggets, are effectively worthless.

Not to be confused with Fuck-McNuggets, a delicious chicken-based food item deep fried in fuck oil.
Greg: "Steve! I found a fucknugget on the ground here!"
Steve: "Greg, this is a only nugget of dumbfuck."
Greg: "Damn. That's boo boo monkey."
by Grent July 23, 2008

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when someone fucks and a little shit pebble comes out
he fucked her and they each had a fucknugget
by lilkiller October 23, 2011

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Noun. A sharp pejorative for limited use on the most unpleasant of the thought challenged.

Adjective. Used to describe the most senescent of fartsome cloacas. Often seen modifying the noun "PincherMartin."
Noun: PincherMartin is the drum-major of fucknuggets in The Perfect World of marching bands.

Adjective: That fucknugget PincherMartin cannot process the information he allegedly gleans from all the books he lies about reading.
by rdbrewer September 26, 2005

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BMW motorcycle riders refer to the many accessories they put on their motorcycles as "fucknuggets". Used in place of the archaic term "farkle".
"Congratulations on the new BMW R1200GS Adventure motorcycle. You are going to need to add a lot of fucknuggets to that bike."

May also be used as a verb as in: Let the fucknuggetting begin!"
by BobFV1 September 22, 2007

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A midget without arms or legs used solely for sexual intercourse, requires a destinctive taste to find sexually attractive (scottish variant refurred to as "Mc-Fuck-Nugget")
I spent all last night with a fuck nugget

My nugget was filled with creamy goodnes

I went to Glasgow and helped myself to a Mc-Fuck-nugget

by John Doeman November 05, 2007

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Someon who is acting stupid or standing out just go get attention.
Retard: hey guys you wanna see my pokemon cards
Me: shut up no one cares you fuck nugget.
by greggyghettocooch January 22, 2008

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