1 definition by D999

yai yai

signature steve vai guitar sound.
made by playing with a special pedal and precise timing.

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."

by D999 August 11, 2005