A true boosie bad azz is someone who is 100% badass, does whatever the fuck they want and gets fucking wasted every night. You have to be really fucking hardcore to be a genuine boosie badass.
It is commonly misspeslled as "boosie bad azz". but its with TWO Z's!
Ryan: Are you going to that party tonight?
Emily: No, it's at chuck e. cheese.
Ryan: What. you too boosie bad azz for that?
boy 1:" i got so crunk in the club last night. i saw so fucking wasted"
boy 2: "damn, thats so boosie bad azz"