flashburn 

The burn inflicted on materials and people from the intensity of the initial flash of a nuclear device or large conventional bomb detonating at a range outside the immediate blast radius.

Observers of the the first nuclear tests in the Mojave Desert suffered from what appeared to be a sunburn but were in fact the first documented cases of the damage that caused by the radiation released in the first initial flash of the bomb.

flashburn by Newsy May 14, 2005

flashburn 

The burn inflicted on human flesh by standing too close to the muzzle of a gun as it is being fired. Often suffered in close quarter combat.

Johnny, the lead man in the SWAT team, suffered first degree flash burns to his face after entering the room and engaging the hostage takers who opened fire at close range.

flashburn by Newsy May 14, 2005

flashburn 

The stain on your underwear from an unexpectedly wet fart.

"Man, I thought I just had to rip one and ended up with a flash burn"

flashburn by slacker April 4, 2004

russian flashbang

When you cum in a girl's eyes and slap her ears simultaneously

She said she loved me, right as she was blowing me. I gave her a Russian Flashbang and got the hell outta there.

russian flashbang by Tactical Russian October 22, 2013

mental flashbang 

Something so unexpected or outlandish that you shut down for a second. Usually without clarification from the speaker.

Bill: "I was eating these really good chips that I found at Dan's house but I didn't know the name. turns out I was actually eating his cat's shit"
Hank: "..."
Bill: "...so I was at the arcade the other day..."
Hank: "What the fuck dude? you're just gonna drop a mental flashbang like that?"

mental flashbang by dpgf April 15, 2021

Flashbanged 

Getting unexpectedly blinded by something bright such as a flashlight

I just got Flashbanged by that lamp, becareful

Flashbanged by JurassicEels May 20, 2018

Flashbang 

When you cum in a girls eyes and slap her in the face while screaming

Yo dan I flashbanged your nan last night

Flashbang by Master jacker July 31, 2020