There's no harm will come of it, but only good, if I'm not a bonehead from Bonetown.
And to think that he chose this moment to pull that bonehead play!
Don't pull any bonehead plays that'll get these people down on you.
He is not necessarily a "bonehead," but this phrase, like "fathead," is no accident.
Scotty, under his breath, began heaping curses on himself as a bonehead, ...