look up any word, like cunt:
 
2.
The word Yay is derived from the spanish word llello (pronouced yay-yo) which is slang for la cocaína, or cocaine.
WE GON' GET SOME YAY YAY MY NIGGAS
by LiDsY July 03, 2013
 
1.
A sign of great approval. Ice cube status.
Q: Wanna eat some bagel bites?
A: YAY YAY!
by Big Bub Yay Yay November 14, 2009
 
3.
Something said out of celebration.
The girl screamed Yay Yay when she pushed her brother into a wall.
by Johnno Moto May 28, 2008
 
4.
A beautiful, gorgeous girl, who likes to wear her stunner shades.
Traditionally, sung in a song: "I love Yay Yay because she's so gorgeous, she's so stunning!"

As well, it is often yelled, "Mama! Yay! Yay! Mamaaaaaaa!"

In tagalog, "Meron silang nang Yay Yay."
by MMMMMMMMMMMMMMBreezy November 20, 2008