noun
goober
GOO-ber/ˈɡuːbər/
A peanut.
A whole goober rests beside an open shell with two kernels.

Etymology
The peanut name comes from an African language, perhaps a Bantu language; the source compares words meaning “peanut” in Kikongo and Kimbundu. It does not explain the extension to a silly person.
In context
I was just being a goober but it it was just something off the top of my head
More examples
- She cracks a goober and eats the nuts inside.
- We buy a bag of roasted goobers at the market.
- Boiled goobers are a favorite snack at our family picnics.
Forms
goober · goobers
Similar words
- peanut
- Peanut is the standard term; goober is informal and regional.