Used actually in the plural context, sloppy ploppies are a bad case of diarrhea in which should not even be wished upon the worst of people. Sloppy ploppies not only is diarrhea which is brutal to have to begin with but on top of that you feel like a rainstorm of shit is coming down out of your asshole which is actually being called down by imaginary natives rain-dancing around a fire set on the hairs your choda & around the rim of your asshole.
So not only do you get the worlds worst case of ringsting, which makes it hurt so bad to wipe, you get the terrible plops which make you wipe 100 times.
"Dude, my asshole burns so bad, I feel like shit.. I had the sloppy ploppies."
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.