up on things
Knowledgeable of the ways of the street.
If you ain't up on things... etc.
up that thing
To pull up with something your going to use as a weapon on someone
If this man keep talking on my mama Ima up that thing
Don't get all worked up over things.
It is mean without too much emotion.
Whether there's an external change,react accordingly.Follow your instincts as primitive animals do.Don't get all worked up over things.