Derogatory term mainly used on Americans. Stands for "Fucking American Shit Head(s)". Can be substituted as needed:

Fucking Afghani Shit Head(s)
Fucking Arabic Shit Head(s)
Fucking Australian Shit Head(s)

Best used on unknowing victims. You can also find "FISH" (Indian) and "FESH" (English).
Yo Alex, check out the FASH that just hopped in the lift.
by DanFDL2 January 11, 2007
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Fash can be either good or bad. It can mean something is super cool or someone looks super good or fashionable or it can be used as an expression of disgust or to mock someone.
"Ew have you seen what she's wearing?"
"Yeah, it's so fash."

"Wow Michael is lookin FASH today."

"Today we will have a test."
"FASH!"
by Camgurl0428 September 12, 2018
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A slang term used to describe the human female, specifically when out on the toon.
By jings, i couldnt half go some hot sweaty fash this evening!!
by Boomski March 7, 2008
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Look at that fash, she belongs in fashville, what a fash!

That fash is checking you out.
by Eddie Melik June 21, 2006
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