Shorthand for yabai (ヤバイ) , a very flexible japanese word that means something crazy (usually dangerous) has happened. Popularized in virtual youtuber chat room.
> A youtuber is reviewing NSFW artwork of herself
> Accidentally showed a loli version
> Viewers: YAB
> Accidentally showed a loli version
> Viewers: YAB
by lumi89 November 13, 2020

by daygoJ May 05, 2007

General chav terminology for an expression which is directly descendant of the less known phrase: "I'll rip your f**king head off" - For any chavs out there, this in turn would translate to: "Yu fukkenn wattz m8, gunner bringh da fooken kreww m8, $mach u downn, blined yu wid da BLING m8". If a non-chav is met with such exclamation, one should reply with the statements: "kk." or "got 20p mate?".
Also a polish burger, made mainly from goats oesophagus.
Also a polish burger, made mainly from goats oesophagus.
Johnty Williams IV "How is sir on this fine day, may I ask?"
Young deliquent: "FUUUKEN YAB M8"
Janice: "I'm quite enjoying this meal."
Arnold Schwarzenegger: "Yes. This yab is filled full of membranous goodness"
Young deliquent: "FUUUKEN YAB M8"
Janice: "I'm quite enjoying this meal."
Arnold Schwarzenegger: "Yes. This yab is filled full of membranous goodness"
by Nose July 28, 2008

YAB is the acronym for the Korean drama series "You're Beautiful" starring Park Shin Hye and Jang Geun Suk, which since its broadcast in 2009 has gained a cult following online.
by Bowieified July 30, 2011

Don't mind those guys panhandling at every fuckin intersection; they're YAB of ignorant saps waiting for The Lord to fix everything they've fucked up in their life.
by Say What? June 30, 2004

Bill : "do you wanna go yab right now."
Andrew: "hell yeah."
Tyler: "yo you should go take a yab."
Jimmy: "i'm already yabbed out, maybe later."
Andrew: "hell yeah."
Tyler: "yo you should go take a yab."
Jimmy: "i'm already yabbed out, maybe later."
by DJ-CRICCI August 11, 2016
