Definition 1.)
The sound made when someone flat-lines at a hospital.
Definition 2.)
The sound made mockingly by others when someone is totally defeated, fails at something, or when a drunk guy passes out.
Example 1.)
Heart Monitor: Beeeeeep
Nurse: Doctor he's flat-lining!
Example 2.)
Jenny: We're through Jason I didn't like you to begin with.
Jason the douche-bag walks away looking crushed.
Spectator 1.) Looks like he's done for.
Spectator 2.) Beeeeeep!
Spectator 1 and 2 laughing hysterically
Example 3.)
Bob the Drunk passes out
Friend 1.) Lost another one. Beeeeeep!
Spectator 2.) It's a damn shame.
Spectator 1 and 2 laughing
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.