Flathead
(redirected from a flat head)flathead
slang A stupid or silly person. Can you believe that flathead is still pushing the door marked "pull"?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
flathead
n. a stupid person. Carl, don’t act like such a flathead.
flatheaded
mod. stupid. Martin seems flatheaded, but he’s quite brilliant.
See also: flathead
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.