The act of being super awesome reaching a near God like status while at the same maintaining a high reputation among a)your peers b) Everyone else that sees, hears, or is lucky enough to be graced with your presence therefor making you that "mothafucker".
In the movie Pulp Fiction, Samuel L. Jackson epitomizes BadAssMothaFuckery.
Of all dictionaries Urban Ditionary displays the highest levels of BadAssMothaFuckery crushing all competition in that category.
To break someones face, take their lunch money, pimp their momma, still their girl, ask for a ride then blow up your car, piss on your chest for talking shit, blow hot weed smoke in a cops eye, shove a kali stick up your peehole, and look good while doin it,
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.