The head of the drilling crew on an oil or gas rig. What began as a joke name for the man in charge of the equipment is now an official term for the leadership position.
That old toolpusher has been riding my ass all day about painting those stairs.
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.