mo blacker
A process non-african-american's go through to acquire more 'African-American' type characteristics. It is most often white guys that are tring to get stereotypically mo blacker.
Duder 1: "So, let me get this straight. You now have had sex with a black girl, got multiple tickets, holler at every fine asian girl, enjoy grape drink and Hennessy, you can't swim and have started rapping. You're gettin' mo blacker by the day son!"
Duder 2: "Yeah, fo sho."
Duder 2: "Yeah, fo sho."