Like in other words: Stay tha hell out of my biznizz bitch!
I wasn't even talking to you! Girl boo! anither ex.You talkn with ya gurlz (or whoeva)and sum trick walks up and starts to put her two centz in you turn to her and say Gurl boo! or (bitch boo!)
by Viktorya February 8, 2008
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"Girl, boo" is used to show disapproval of someone or their comments.

Also meaning that they're wrong, don't fit in or are ugly.

(Especially when a girl says something STUPID or random)
Friend: "Saquisha is going out with Marque."
Me: "No, she's not."
Friend: "Yes, she is."
Me: "Girl, boo."
by ZuRugally August 21, 2010
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