fetti, n. — Green’s Dictionary of Slang

fetti n.

also fetty

[? abbr. SE confetti, i.e. ‘pieces of paper / paper n. (1)’]

(US black) money.

1992		Click ‘Let’s Get Drunk’ 🎵 I can’t get enough of that fetti for real.
2005		Li’l Kim ‘Last Day’ 🎵 I’m gettin fetty, movin through them tax brackets.
2015		Chief Keef ‘Facts’ 🎵 I know I don't speak English bitch, all I speak is Fetty.