nuthead

If she ever referred to the events, she laughed them off as silly kid stuff, and called the ex-boyfriend a nuthead, the way you speak of someone who drove around in high school smacking metal mailboxes with a baseball bat.

Mum doesn't want a diamond ring out of a cracker, nuthead!

When you are striping gears and come to a nuthead run right over it, with fine lines on its edges, or around the nut, as may be preferred.

Bend a paper clip into the shape of eyeglasses; glue them to the nuthead.