The word Yay is derived from the spanish word llello (pronouced yay-yo) which is slang for la cocaína, or cocaine.
by LiDsY July 03, 2013
by Big Bub Yay Yay November 14, 2009
by Squiintz3 December 30, 2012
person A: "That Vai show was bitchin'!"
person B: "Did he do the Yai Yai?"
person A: "Fuck yea! He was like 'wah wah wah YAI YAI!!!' And then Billy Sheehan played a sick bass solo."
person B: "Did he do the Yai Yai?"
person A: "Fuck yea! He was like 'wah wah wah YAI YAI!!!' And then Billy Sheehan played a sick bass solo."
by D999 August 11, 2005
by Johnno Moto May 28, 2008
aw man, some asshole jacked my $20 bill that we rolled up to bust. i didn't notice cuz i was hella' yayed out
by alf December 20, 2003