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When having sexual intercourse with a duck, or "fuking" the duck, is screamed out loud by the person fucking the duck at sexual excitment when the point of the orgasm has happened
Louie: oh oh oh oh duck oh oh oh OHHH OH FLUBBERNUTS!
Duck: Quack!!!!!!!!
by Lewis Tilley May 12, 2007
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2
The act of cumming so much that it forms a slime like texture.
Hey you heard about them new flubber nut Cheerios?
by Demoman9 May 28, 2018
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3
I fun word to call someone who doesn’t understand but still be nice about it
Dad your a flubbernut!
by Zelix July 31, 2018
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