Green’s Dictionary of Slang

Andrew Jackson n.

(US) a $20 bill.

1987		JVC Force ‘Strong Island’ 🎵 Getting fully fully paid by my man Andrew Jackson.
2008		D.R. Pollock ‘The Fights’ in Knockemstiff 194: ‘It was only twenty fucking dollars,’ [...] The last time I’d visited my parents, I’d slipped a lousy Andy Jackson out of my mother’s purse.
2013		H. Lessig ‘PIN’ in ThugLit July-Aug. [ebook] The [ATM} machine spits out 45 Andrew Jacksons.