Significado de "All up in my face business"

What does "All up in my face business" mean? Please help me.
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Avatar do usuário Ricardo F. Bernardi 9580 15 182
Hi Wladimir Lopes.

We have two sentences: All up in my face business and All up in my grill

(1) Literal Meaning: All up in my grill doesn't necessarily mean to be in someone's business.
Although it is very odd, it means there is someone in your face.

(2) Slang: Therefore, it can also be used to describe someone / something which is excessively annoying and bothering you.
That ho was all up in my grill. Tell him to get his nasty, annoying self outta my face.

Sources: (1) LOVELY, Lutishia. All Up in my Business. Page 155. Kensington Publishing; 2011.
(2) PECKHAM, Aaron. Urban Dictionary - Book 3: Freshest Street Slang Defined. Andrews McMeel Publishing; 2012.