The sound made when someone flat-lines at a hospital.
The sound made mockingly by others when someone is totally defeated, fails at something, or when a drunk guy passes out.
Heart Monitor: Beeeeeep
Nurse: Doctor he's flat-lining!
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
Bob the Drunk passes out
Friend 1.) Lost another one. Beeeeeep!
Spectator 2.) It's a damn shame.
Spectator 1 and 2 laughing