A new type of education in which a school gives lessions on how to have sex like a porn star. It is often run by an exporn star/porn star{s} and/or a porn film company from which they sometimes recrut porn acters and actresses.
The lessions include in the act learning that is during sex.
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.