it means "livin the good life"
urbandictionary.com has many such statements for you to look through as well if you wish
ballin
Steady Mobbin' Eazy-E
Markus Ballin is 6' 3".
High-Ballin' was created in 1981.
Remember Me Ballin' was created in 1998.
Ballin' Jack was created in 1969.
Ballin' the Jack was created in 1913.
Return of the Ballin' was created in 2008.
Ann Ballin was born in 1932.
Ann Ballin died in 2003.
The duration of High-Ballin' is 1.62 hours.
Albert Ballin was born on August 15, 1857.