From doof + -oid.
(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “What sense of "doof"? Compare comments at "doofbag".”)
doofoid (plural doofoids)
- (slang, derogatory) An idiot; a simpleton; a fool.
1996, Dafydd Ab Hugh, Swept Away: The Mountain, HarperPaperbacks, →ISBN, page 63:[…] somehow, it had become my duty to get these doofoids up to the top of the Hag's Tooth, […]
2005, Martin Kihn, House of Lies: How Management Consultants Steal Your Watch and Then Tell You the Time[1], Warner Business Books, →ISBN:As business prose is prose for drool-bucket doofoids, so everyday business math is math for blistering bozos.
2007 January 20, Max Leggett, “Re: Gibson KS 336”, in rec.music.makers.guitar.jazz[2] (Usenet):It's aimed at people who want .... it's aimed at silly, trite, shallow doofoids with more money than either brains or taste.