Dubbed flashbang because it is comparable to the disorienting nature of a flashbang grenade. One does not see or think clearly for a temporary amount of time after said flashbanging has resulted upon them.
This is often done by a "Ratchet" Ex-girlfriend who doesn't deserve to be with the said bro and shortly afterwords begins to weasel their way back into a comfortable status quo so they can suck all life from the target and all bros (and bras) of said target.
"Dude, did you hear what happened with Randy and Galinda?"
"We've talked about this bro. Those two names are never to be mentioned in the same sentence."
"Dude, I know, but we have a code black."
"I've never even heard of code black."
"Dude. I know...She flashbanged him!"
"My god!...Whats the status?"
"Kill confirmed. That but fucking whore`s gottem.
B A N G !!!!!!!!!!!!!!!!!
Very very very loud, trust me! The occupants of the room are stunned and find themselves unable to do anything.
Then a four man assault team takes any terrorists prisoner or immobilises any firther threat before lining up the hostages for search and check.
n. a nonincendiary explosive which creates a concussive blast of sound and a temporarily blinding burst of light.
Chris: Oh yea! *bumps into a wall* Well I flash banged your mom last night!
It's also the grenade in CS that makes your screen go white for a full second. Desired use is associated with room clearing and pwning the other team, so why are my teammates the only ones who ever seem to use them on me?
father: a non consensual, illegal, immoral, amoral, and one sided (in the guy's favor) flash-bang. I don't give a rat's ass whether it's the correct legal definition, that's for the State to decide, but there you go, that's my definition of rape.