Slappin Yamz Share definition Flag the act of having sex, fucking, and/or getting it in. Guy 1: Yo i heard you was slappin yamz with my sister!Guy 2: Hell yeah i was gettin it in! Slappin Yamz by Little ZJ April 18, 2010 0 0 Get merch Get the Slappin Yamz mug. Buy Now — $32.95 See more merch