When a man smears poop all over the bottom of his nut sack and then proceeds to use it as a stamp and stamps another person's face. This can be used during sex or at parties to show dominance.
Sally doesn't know it, but she is getting a tainted stamp after school today.
The kids really got into the finger painting mood.....reminds me of back in the day when I used to get tainted stamps.
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.