Whilst the male proceeds to fuck a male/female in the dirty butt hole, preferably "doggy style", the giver quickly withdraws his "poop dick" then runs beside his receiver. Quickly and powerfully he proceeds to whip her/his back then quickly gets back inside before the other partner realizes what just happened.
Dirk: I was fornicating Gabe hard in the pooper last night when I went to preform the Texas Dirty Whip the fucker turned and i got him with a Mexican Cheese Saucer on accident.
John: Boss probably wasn't happy about that. At least he got his protein in for the day.
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.