a kerbitina is a group of cool ass, bomb bitches. becoming a kerbitina is the highest honor that your squad can attain. an example of a kerbitina is the trifecta of drake, will smith, and kanye west & beyonce, nicki minaj, and rihanna. together a kerbitina cannot and should not be fucked with.
malfoy: shit, harry can u let me in your kerbitina?
harry: fuck no malfoy, you're not a bomb ass bitch.
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.