slang Someone who is regarded as stupid or foolish. A reference to the movie character Forrest Gump. Geez, he keeps pulling on a door that's clearly marked "push"—what a gump.
gump
(gəmp)
n. a fool; an oaf. (Like the rural and not too smart Andy Gump of comic strip fame in the early 1900s, later reinforced by Forrest Gump of movie fame.) Don’t act like such a gump!