One with extra flub( fatness) on his or her body. Also used in nicknames Flubby and flubbs. Also referenced in the song Flubalicious.
Billy: What is wrong with you, you flubbernugget?
Joe: I just have extra flubbyness today.
by Ryan21234 September 05, 2007
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1. Similar to a muffin top where a woman's love handles are somewhat defined when wearing tight shirts.
2. A substitution for the worst curse words.
Man, that lady needs to cover up that flubbernugget!

Oh, flubbernugget, I left my math homework at home!!
by Ale4lyf2 January 01, 2011
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A word used to describe the fat of a whale.
That whale is huge! Look at all that flubbernugget!
by Fone Bone November 25, 2018
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It is another way of saying crap or darn or any other word used to express anger or frustration
by Emilehhhhh January 15, 2009
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1. nickname of a song made up by saxaphone players from norwin
2. can be used as a statement of unsureness.
3. greeting (of friends that know this word)
1. BAND TEACHER: lets all get out juggernaut and play it.
ME AND FRIEND: (randomly) FLUBBERNUGGET!
BAND TEACHER: what?!
ME AND FRIEND: FLUBBERNUGGET!
WHOLE CLASS: (laughs)
2. WHAT THE FLUBBERNUGGET!
3. YOU: Flubbernugget!
FRIEND: Flubbernugget!
by Sara (a.k.a.) Steele June 22, 2005
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