A flash sideways is not a flashback, flash-forward or an alternate timeline. It posits what would have happened if one event didn't.
In the ABC Television show Lost, a flash sideways shows what would have happened if Oceanic flight 815 didn't crash on the island but instead landed in Los Angeles.
by babcock69 May 24, 2010

A street term for a special type of medical heroin... if u hav ever had heroin you know why its called that!!!
Zack: Yo man after i broke my arm when i got fucking slammed into the ground the hospital gave me some Jack Flash i am gonna try to get some extra so i can sell it
Miano: YA!!! then we can buy weeeeed!!!!
Miano: YA!!! then we can buy weeeeed!!!!
by Ross The Great April 21, 2007

by KidFlash4155 February 14, 2017

When a character in a movie, book, or T.V. show travels back in time and then has flash backs that take place in the future.
by 314 February 28, 2008

Showing or revealing a part of the body that isn't considered a private part, i.e. a foot or an elbow.
by tee-dub April 25, 2006

Jon forced flashed Chelsea in line at the concert last night. She's never gonna wear a tube top again.
by Jeff@Guidos May 30, 2007

A League of Legends (LoL) term used to define someone who uses the in-game ability flash to give the enemy team kills on purpose (inting)
LoL Player 1: Omg, did he just Flash int down mid?
Lol Player 2: What the fuck is he doing?!
Flash Int'er: Hehe xd. I'm flash inting!
Lol Player 2: What the fuck is he doing?!
Flash Int'er: Hehe xd. I'm flash inting!
by Kenami December 3, 2017
