Green’s Dictionary of Slang

goober n.1

[SAmE goober, a peanut, the state’s main crop]

1. (US) an inhabitant of North Carolina, Alabama, Arkansas or Georgia.

L.N. Boudrye Fifth N.Y. Cavalry (1868) 339: Conscripts by the dozen [...] pouring in the Castle, like animals in the ark [...] Some from Mississippi state and ‘Goobers’ from Tar river .
[US]in Overland Monthly (CA) May 420: Many a lettre de Jerusalem was dispatched by the Tar-heels, the Goobers, the Clay-eaters, from Point Lookout.
[US]Schele De Vere Americanisms 57: During the late Civil War a conscript from the so-called ‘piney woods’ of that State [i.e. N.C.] was apt to be nick-named a Goober.
[US]C. Hiaasen Stormy Weather 106: They’re talking to some dumb goober from Alabama.

2. (US) the penis.

[US] (ref. to 1920s) AS XXVII:2 157: Goober had formerly been identified with the anatomically distinctive organ of young boys.
[US]Trimble 5000 Adult Sex Words and Phrases.
[US]B. Rodgers Queens’ Vernacular 22: After swallowing the gob’s goobers, a typical sailor queen may attempt naval combat (to fuck a sailor).
[US]G.A. Fine With the Boys 171: Boys may say to their friends, rivals, and enemies [...] ‘eat my goober,’ ‘eat me out,’ ‘french my hole’.
[US]J. Lansdale Bad Chili 197: Pretty soon he’s hanging out in the park shoppin’ for goober.

3. the testicles.

[US](con. 1940s) E. Thompson Tattoo (1977) 57: ‘He [peanut seller] ain’t got no hot nuts,’ he joked with the woman. ‘Just some little ole goobers.’.

4. (US campus) a small child.

[US]G. Underwood ‘Razorback Sl.’ in AS L:1/2 59: goober n Small child.

5. a generic term for any rural person.

[US]C. Hiaasen Nature Girl 7: And where would you take these goobers on your ‘ecotour’?
[US]D. Winslow The Force [ebook] The goobers love to talk about crime in the big cities.

In derivatives

Gooberville (n.)

(US) from un urban perspective, a generic rural small town.

[US]D. Winslow The Force [ebook] ‘We trace it back to some straw purchase in Gooberville, the judge is going to be pissed’.

In compounds

goober-brain (n.)

(US) a silly person.

J.P. Miller Race for Home 170: The same must work for climbing chicken shacks, he knew: foot in crotch of chinaberry tree, up and onto roof of shack before those rows of goober-brains could even cluck a what-was-that .
[US]TV Guide 37 161: If only boys weren't such ‘goober brains!’.
goober-head (n.) [-head sfx (1)]

(US) a general derog. term, typically describing an eccentric, a fussy person, one who drives badly.

S.E. Whitman Rebel Ranger 77: ‘Ah, thet damn gooberhead,’ sighed Boxley. ‘I’m fixin’ to lose him — he's bad luck’ .
[US]Eble Campus Sl. Mar.
L. Kelly Presumption of Guilt 10: Has it occurred to you that if you hadn't tried to make this into a media circus [...] you might not look like such an almighty gooberhead right now?
[US]C. Cook Robbers (2001) 296: Sterling bunch of gooberheads.
S.W. Byrd Among the Broken 18: Then standing up a little straighter and trying for a more authoritative tone she added, ‘Now, come on, you gooberhead’.