Burger Flash

When you lift up the top bun on your hamburger to show someone what you have on it.

Matt asked me what kind of sandwich I was having, so I had to burger flash him.

by Ghost Liberty June 08, 2010

pk flash

A move in Smash 4 that no one uses because you get punished, yet its still a move.

"PK FLASH!!!" - Ness
"Game!" - Commentator

by TheLegendHimself920 October 19, 2017

The Manhattan Flash

When you are having doggie-style sex with a female and you say "Honey, did you see that?" and when she says What? you jam your thumb up her ass.

the girlfriend pissed me off last night so i gave her The Manhattan Flash.

by Rob Cox January 28, 2009

flash fart

A fart that happens so fast and unknowingly that there is no time to tighten butt muscles.
Usually by constant laughter

John: So the police officer says 'thats not a donkey, thats my grandma!'

Jerry: LMFAOBBQWTFLOL!11! *flash fart*

John: Yo did you seriously just flash fart?

by Cody Baggs is here October 15, 2007

Flash Friday

When you get on Craigslist and post a picture of a nude body part (boob or dick) under the personals section of causal encounters M4W or W4W and then get sent naked pictures back.

1. Can't wait to post my boob shot on Flash Friday on Craigslist and hopefully will get lots of boob shots back.

2. Can't wait to go under W4W and check out the Flash Friday pics on craigslist and maybe they won't mind a dic pic back.

3. Did you check out the Flash Friday pics on Craigslist this weekend? Wish they would stop posting ugly bodies.

by bodaciousredhead December 06, 2012

Flash porn

Where your not supposed to look at porn on a computer but you log into a porn site for a few seconds to get a peek of tits,cunt etc. and then click it off before anyone sees you.

He looks at flash porn.

by Judge dredd7 December 20, 2011

Bone Flash

The instant where a man's penis become erect unprovoked. In other words, a random split second boner.

"I was sitting in class today and had a bone flash, it was so bad that I couldn't get up and walk around without being noticed. "

Or

Bob: "I just had a bone flash."
John: "WTF? Theres no girls in here."
Bob: "I know. Either its a bone flash or I'm gay."
-silence
Bob:

by Dr. McAwesomeBerg October 25, 2009