goob, n. — Green’s Dictionary of Slang

goob n.

also guber

[SAmE goober, a peanut]

(US campus) a small mole, spot or similar skin blemish.

1971		Current Sl. VI 5: Gubers, n. Acne.
1976		P. Conroy Great Santini (1977) 17: Ben Meecham, the boy whose face is one big goob.
1981		Eble Campus Sl. Mar. 3: goob – an acne pimple.