look up any word, like plopping:
 
15.
yay for you

you get a prize

it's your lucky day!

you did good

I like you

you like that don't you
jack: omigod dottie, bobby-jean liked my film
and wants to screen it opening night!

dottie: It's your birthday! hay hay.
by Dottie March 23, 2004
 
16.
1. A phrase stating the fact that you have aged another year that day.

2. The saying for when a person is dancing very well.
1. Hey Bob. Guess what? It's your birthday!

2. Go white girl! It's your birthday! It's your Birthday!
by Flession March 25, 2004
 
17.
An expression of delight, similar to "It's my birthday." Probably accompanied by dancing around.
"Oooooh yeah, you dunked that shot... you da man, it's your birthday, woop! Woop!"
by Athene Airheart March 20, 2004