YAAY 

A word used when you are EXTREMELY exited about something.
Yay (one "a"): Eh, I'm sort of exited
YAAY (two "a"s): I AM SO EXITED THAT I COULD EXPLODE

YAAY darth owen just uploaded a new youtube video!

YAAY by darth owen April 14, 2016

Yaay 

To show extreme excitement or happyness and joy.

My mom said we were going shopping I said,"Yaay,I need to go pack!"

Yaay by [e-mail] October 30, 2018

yaayee 

It is a word used for expressing excitement. Not like yay, more like 'eehaw'. It is basically a sound someone makes when they are excited.

Yaayee yaayee yaayee, I got a promotion!

yaayee by Prahita February 16, 2014