yay!! 

1. When something is spectacularly fantastic!

2. Sarcasm when something overly unbelievable happens.

1. I'm going on vacation and I'm going to get tan! yay!!

2. I forgot my card in the ATM machine. yay!!

yay!! by yvonne March 12, 2003

yay!! 

a word used when really happy, or faking really happy
raising both arms in the air and waving them back and forth.
YAAAAAAAAAAAAAAY!!
usually used in conjuntion with the words: sweet, totally, dude, and awesome.

yay!! our fashion project is totally awesome!! yaaaaaaaaaaaaaaaaaaaay!!
haha, i love sara.

yay!! by madilyn September 24, 2008

Yay

Yes

Yay. It is so cool.

Yay by Bonehead5000 June 4, 2020

Yay

Used as an exclamation of pleasure, approval, elation, or victory.

I wanna go to Hawaii! Yay! Yay!

Yay by IAMSODOT March 11, 2004

yay

An exclamation that always needs to be louder. Most often used in conjunction with practicing cheers for a friends national competition.

RD: So now that you know the elements of a good cheer, lets hear one!
FS: *softly* yay
RD: Louder!
FS: *still softly* yay
RD: Louder!
FS: *again, softly* yay
RD: LOUDER!
FS: *Deep breath in, preparing for a loud cheer.* *Softly* yay

yay by serialman August 31, 2012

YAY!!!! 

1. Extreme happiness.
2. Can be used in response to :) .
3. The suffix -vm can be used for humour purposes.
4. Discovered and utilized most frequently by a gentleman named Shaun.

Shaun: YAY!!!!

YAY!!!! by megaaaaaaa April 3, 2009

Yay

n;
Slang for Cocaine, popular in California's Bay Area.

Syn;
blow,coke,snow.

I'm so strung out from all the yay last night

Yay by Bookworm February 2, 2005