Retaliating to an insult by rising from your chair, leaping into the air, spreading your arms wide and rotating in a helicopterlike fashion in order to create enough centrifugal force to stun your opponent with your rapidly revolving cock.
My boss gave me a poor performance evaluation so I leapt from my chair and roundhouse cock-slapped the son of a bitch with such force that the resounding thunder clap of my cock striking his cheek left a Phallic shaped bruise that lasted for a week.
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.