The act of a Texan defecating diarrhea in a sexual manner or, alternatively, said action performed in Texas, but not by a Texan.
"Everyone knows about the Alabama hot pocket, but people don't know about the Texas Oil Pipe...and that shit feels GOOD! Emma did it to last night, you know?"
translates into having a few or more drinks before you head out to the bars for the night, thus lessening your bartab, and making all the shots, combos consumed later go down much more easily.
I've got to oil the pipes before I head out drinking!
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.