It's also worth noticing that the grammar in this sentence is non-standard. 'If it was nobody there ...make sure it's nobody there' is not proper English. Maybe some kind of patois? Please don't try to learn the English language from sentences like this!

"Ballin'" here is slang. It is used as the opposite of "struggling" so it means "doing well."

(Using the word in a coherent, non-ebonics sentence) Ex.He called me up and told me he was ballin, but I later found out he was cheating on me Ebonics. 1.) To play basketball. 2.) Living in affluence/wealth. (thats in Urban dictionary)