an adult who goes with a minor.
From the film "The big lebowski"
jesus quintana, a character from the hit movie "the big lebowski", did time for showing his ass to ten year olds and was therefore described by Walter, john goodman, as a peder-ass.
The Dude: Fuckin' Quintana... that creep can roll, man.
Walter Sobchak: Yeah, but he's a pervert, Dude.
The Dude: Yeah.
Walter Sobchak: No, he's a sex offender. With a record. He served 6 months in Chino for exposing himself to an eight year old.
The Dude: Oh!
Walter Sobchak: When he moved to Hollywood he had to go door to door to tell everyone he was a pederass.
Donny: What's a... pederass, Walter?
Walter Sobchak: Shut the fuck up, Donny.
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.