it's kind of along the lines of "whatever" and "you
just do you, I'mma do me".
after you've been seeing this guy/girl for a while and expected them to be exclusive to you and they tell they're about to go n hang with this girl/guy they like, and it goes something like this:
"are you mad?"
-"no do what you do" (meaning yea
im mad but peace out, if you're gonna
pull a stunt like this, im out. have fun with you new bitch)