The Brief: A baller is someone who has made it in life. They are rich and successful.
Ballin’ refers to the act of living a bougie, baller lifestyle. The term originated from basketball ballers who became immensely rich and successful, but now can be applied to a person with any profession.
Tonight, I’m a baller, babe (tonight, I’m a baller, baby) –Ariana Grande, “successful”