Someone with a pussy that resembles the smell of a fish. You go down on it, and your nose hair burns. DAMN THAT SHIT SMELLS BAD. You get a boner and then you notice the stench and the weiner goes all floppy.
"damn Ashley had some fishpussy, I couldn't even finish"
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.