'Poopiepants' - The point at which you lose control of your bowles and slop a chocolate frog in your jocks. This can also fall under the catagory of 'Sharting'.
Dude I farted so hard shit came out! ewww you fucking SHARTED!
Don't put that fucking laxative in my beer again assholes! fucking shit my pants...
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.