A reference from Harry Potter for having the ability to talk to snakes. This reference is used when someone has mastered the art of not just giving a good blowjob, but giving the best blowjob ever!
Man, Becky legitimately gave the best head ever! I don't know how she made my head spin like that, but damn she must've known parseltongue.
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.