Green’s Dictionary of Slang

gomer n.2

also gomar
[the proper name Gomer Pyle, a fictional T.V. comic yokel character; apparent link to gom n.2 may be coincidental]

(US) a fool, a rustic simpleton.

[US]Wentworth & Flexner DAS (Supplement) 687: Gomer gomar n. A first-year or naive Air Force cadet Air Force use.
[US]D.E. Miller Bk of Jargon (list of tennis terms) 244: Also gomer (as in Pyle?), goofer and goober. A loser, not only in fact and habit, but also by preference or temperament.
[US]C. Hiaasen Double Whammy (1990) 212: So the bottom line is, these Gomers are murdering each other over fish.
[US]C. Hiaasen Stormy Weather 262: She thought: Well, thank you, Gomer.
[US]J. Stahl Plainclothes Naked (2002) 17: You wanna ransack the joint, you gotta pay like everybody else, Gomer.
[Can]Calgary Herald (Alberta) 29 Jan. 4/1: A [...] delight in painting all Conservatives, and by default most Albertans, as rural gomers.
Twitter 28 Aug. 🌐 I think it's a mistake to assume that Q [i.e. a far-right conspiracy theorist] is a single person. Probably several people stirring up the gomers.