Green’s Dictionary of Slang

1. (US, Southern) a sexually voracious woman.

1953

Randolph & Wilson Down in the Holler 253: There are many settlements in Arkansas and Missouri where goober-grabber [...] means a wanton, lascivious woman.

2. (US) a male homosexual.

1997

J. Lansdale Bad Chili 198: There’s gay action [...] You wouldn’t believe how many propositions I got from goober-grabbers.