A lyric from 50 Cent's (from G-Unit) song In Da Club. It is now used as a term of endearment between homies.
Lyric: Go shorety, its your birthday, we gon party like its your bitheday.

Endearment:
Homy 1: Aight man, peace
Homy 2: Yea, its your birthday!
Homy 1: Thanks man.
by Yo Mama's Pork March 26, 2004
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When something is lucky and is used to your advantage. Its a stupid term which I believe orignated from Rocket Power.
Sam just did an olly. "Go sam, its your birthday, its your birthday."
by Insane March 21, 2004
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A stupid saying really; used as a reason to do something one might otherwise not bother doing
its ok dawg u can get f*cked tonite cos its yo birfday
by brendan March 21, 2004
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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 21, 2004
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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
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Who gives a shit it's your birthday, you most likely don't have any friends.
by Cyber Ghost March 24, 2004
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