dough head

dough-head

Someone who is dumb or stupid. Did you see the guy who's wearing two different shoes? What a dough-head.
Farlex Dictionary of Idioms.

dough head

n. a nerd; a simpleton. Tom, don’t be such a dough head. Read the instructions and do it right.
See also: dough, head
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • a head
  • on one's
  • on someone's
  • run someone out of town
  • save someone's skin
  • (Have you) been OK?
  • pillow-biter
  • do someone or something justice
  • out of one's
  • (I've) got to go
References in periodicals archive
Put the smooth, top side of the dough head first into the oiled bowl and turn to coat the top and sides with oil.
Instead of rooting around for dough chunks in that tub of regular Chocolate Chip Cookie Dough ice cream, "Dough Heads" can now just dig into the core.
A week later, John Dough heads for Central and Northern Europe, where he will appear before groups of executives from large companies.