bonehead:
(plural: ‘boneheads‘; pronunciation: ‘bone…head’)
a stupid or foolish person who is also arrogant, used to insult someone whom one thinks is not very clever;

e.g.
He said, “I’m vexed with that bonehead; I wonder what I’d do next time I see her!”
The foreman has had a tough time meeting the deadline because most of his workers are boneheads and do not have any understanding of the work they are doing.
My friend may seem a bonehead, but he’s innocently honest most of the time.
For a piece of news that shows how bonehead is used in everyday English, please click here. (Please scroll down to the second item of the page — Miguel Cabrera)
