Just his name alone, Chad Feldheimer, makes him sound like a first-class doofus.
From the inrich.com
My checks don't bounce, so I guess I'm not such a doofus after all, huh, fellas?
From the businessweek.com
How was the average doofus back at home going to figure out how to configure it?
From the techcrunch.com
He's a clumsy doofus for whom rising from a supine position can take all morning.
From the time.com
He's not necessarily a doofus, but he's never going to get out of Jersey, either.
From the latimes.com
He came off as ready, reasonable and, crucially, not even a little bit of a doofus.
From the washingtonpost.com
They make you look like an absolute doofus but they're also absolutely great.
From the techcrunch.com
If they think you're a doofus, they're equally free to say you're a doofus.
From the kentucky.com
I refuse to be the subject of a doofus, a complete buffoon, a clown, a joke of a man.
From the infowars.com
More examples
Dimwit: a stupid incompetent person
Doofus is an alternative comic by Rick Altergott about two foolish creeps, Doofus and his pal Henry Hotchkiss, and their adventures in Flowertown USA. Admirers of Doofus praise it as one of the 20th century's last great humor strips.
A person with poor judgment and taste
(1960). The OED has doofus both as an adjective, "characteristic of a stupid or foolish person; dumb, dopey.." and a noun, "A foolish or stupid person; an idiot." Though the NY Times has a reference to doofus from 1955, it isn't certain to me whether this is a personal name or a noun. ...