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
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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
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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
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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
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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
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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.
by Judge dredd7 December 20, 2011
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flash grenade

A flash grenade is a girl who, due to her mastery of the art of deception, appears NOT to be a grenade. She operates similarly to the M84 flashbang issued by the United States army in the sense that it subdues its target in order to trap it, but doesn't kill it so that it can be taken advantage of in ways that require a live body. (Sort of like how some parasites will inject an anti-inflammatory into it's host.) It is only after the victim wakes up that he realizes that he actually hooked up with a grenade.

Flash grenades can be identified easily if one pays attention to the right details. Extremely tan, tons of jewelry, skanky outfit, and caked on make-up are clues that you may be dealing with a flash grenade.

Flash grenades become much better at being flash grenades with each alcoholic drink consumed by the target.
"I don't remember this ugly girl from last night, how'd I get in her bed?" (she was a flash grenade, that's how)
by sammymoto August 28, 2010
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