A Rebillard is a person who typically shows up about 5-6 hours later than when he says he will arrive. A Rebillard will lie about most things, and when caught in a lie, will defend it even when he is blatantly wrong.
Rebillards tend to have wide faces, and talk a lot like Cartman, from South Park. They will cheat at any game they participate in and than rub it in your face ruthlessly.
Dude, are you freaking Rebillarding me right now? You said you would be here 3 hours ago.
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.