A term of encouragement often used to drunkenly encourage equally intoxicated acquaintances. Rarely used on the subject of encouragement's actual birthdate. Commonly preceeded by "Go (name)" and occasionally followed by, "no it's not, go anyway" when spoken by those in the 8-13 year old age bracket (who are hopefully not drunk).
"Look, Susan's about to dance on the bar!"

"Go Susan, it's your birthday!"
by Birthday Girl March 25, 2004
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What occurs when you are expelled from your mother's uterus.
When I was born, the doctor slapped my ass and said "Boy, it's your birthday."
by Ann Hedonia August 1, 2004
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The only occasion on which short people are allowed to participate in certain activities, like pick-up basketball games or parties.
(Gary Coleman's birthday)
Gary Coleman: "Yo 50, is it cool if I go to that big party you're throwin' next tonight? G-G-G-Unit."
50 Cent: "Go shorty, it's your birthday."
by Nick D July 14, 2004
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when something really cool happens to you, it's your birthday
You aced the exam! Go shorty, it's your birthday.
by Estela Lopez March 25, 2004
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an excuse to smoke a fat sac and drink till u cant even stand and then just act totally retarded cause hey ITS YO BIRTHDAY! and no one can stop u, its like u turn into a super hero when someone states "it's yo birthday"
you: yo i dunno if i should drink tonight cause i have church in the morning
friend: nah fuck it, its yo birthday! GO (name here) IT'S YO BIRTHDAY!!!
by deenie June 17, 2004
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