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1.
Affectionate term for someone who has a habit of doing silly (and oftentimes, stupid) things.

See also, nut bunny.
Mom painted Dad's car pink just to get a rise out of him. She's such a goof nugget!
by Lina Blade June 14, 2004
 
2.
1) a silly goose; usually somewhat of an oddball

2) a funny person; not an offensive term. meant to be said lovingly
"Joanna, you are such a cute little goofnugget!"

"Luke's such a goofnugget. He always makes me laugh.
by hewhowalksonthesky December 16, 2011
 
3.
A person that does not require any external verbal berating from others, mostly because they do a good enough job of being a complete mockery of themselves.
"Yo, that dude in the sparkly skinny jeans and Ugg boots up on stage trying to act hard is a total goofnugget"
by Joey Pistachio December 19, 2011