An unusual type of felacio, whereby the female licks glitter and proceeds to suck the male's testicles. The male then turkey slaps the female across the face, making her look as if she's been hit by Mike Tyson. Popular with Collingwood Supporters.
Jim: What did you do to Sharon? She's got a black eye!
Brad: We spiced things up with a Tyson goldsack.
Jim: Grouse.
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.