When she rubs her pussy up & down your cock or when she rubs her cunt un your chest or face- she leaves a trail of juice ( like a Slug's shiny/slimy line it leaves in it's wake) This is a CUNT SLUG.
That chickcunt slugged me all over my chest.....it was hot.
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.