Hi my EnglishForward friends,
Please what does this phrase mean? I have been looking for the definiton of this phrase for almost two hours and I didn't find the meaning....

Even if I googled out many sentences with this phrase, they didn't help me with conclusion. I found these examples:
- If we get all up in his face he's going to move, and with all the contributions he's made to this community, we certainly don't want that to happen. (Very easy sentence except of that phrase..:-(
- I walk up to him and get all up in his face.I just have a feeling that if I'd got all up in someones face, it means that I'm gonna say him everything about my personal feeling to him....But I'm not sure.
thank you so much.
With regards
JCD