Your an idiot.

Posted on the internet to when someone acts foolishly or says something completely dumb.

Pronounced 'Yay' and said with enthusiasm.
Person 1: Do you know the capital of Luxembourg, in Europe?

Person 2: Wait, I thought Europe was a country...

Person 1: YAI!

Person 2: Is that like Chinese or something?

Person 1: *Facepalm*
by RedAckbar December 20, 2010
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" Yay!!! I can't wait to go on my vacay! "
by wanda (O_0) June 1, 2009
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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
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A happy word! I mean look at it! It looks so happy!
by i like ponies and unicorns December 27, 2010
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Slang for "cocaine"; Popular word used in California
"No idea how much yay i can bring in the states" T.I.
by y-DUB August 19, 2007
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"Whoo, HOO!Yay! School is out for summer! See you guys next year!"
by anonymous March 13, 2005
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