Started by the Danville High School baseball team, it is an acronym for Sit Your Ass Down. Mostly said in a way that sounds like sitchassdown. Commonly said after someone needs to sit their ass down.
John: "I just took that asshole yard.
Barry: "Yeah he needs to syad or stop throwing straight cock."
Barry: "Yeah he needs to syad or stop throwing straight cock."
by OnDemHoes November 05, 2011