yadadaimsayin Share definition Flag bay slang for "u know wat i'm sayin?", derived from da more commonly known yadadamean "yadadamean, yadadaimsayin, yadadaimtalkinbout? i know watchu talkin bout!" - know what i'm talkin bout - keak da sneak yadadaimsayin by lovin that thizz May 23, 2006 0 0 Get merch Get the yadadaimsayin mug. Buy Now — $32.95 See more merch