Being rich as fuck, ballin' outta control. Racks is a synonym for stacks; a
stack being $1,000. Basically, if you stackin' money crazy
high, you got racks on racks on racks. Made famous by Yung
Chris' hit song 'Racks'.
That nigga Yung
Chris might not have had racks on racks on racks before that
song, but that shit is a hit, I
bet he's rollin' now.