yaddaddamean

It means do you know what I'm sayin? or Do you understand me?
It's part of the Bay Area lingo. Part of the Hyphy movement.

GUY 1-That shorty's got a fat ass, yaddaddamean?
GUY 2-Yeah I hear ya, I know what your sayin.

by Big Willie A.K.A. Payaso March 25, 2006