Top definition
When time freezes and your whole life flashes before your eyes.
John: So hows work?
Jane: Woah! My whole life just flashed before my eyes!
John: You mean a backflash....
Jane: *feeling dumb* Right.....
by Zippyvinman September 03, 2009
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2
A skid-mark or stain on the gusset of underwear, either as a result of not wiping properly or an ill timed fart.
There's a nasty backflash in your boxers John, I think they may need a boil wash !
by Lonefox GD May 18, 2016
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