y'all best break y'all selves

Warning to children or other misbehaving persons to behave in public. Contrary to previously attributed gangsta use, it's what your Grandma would say if you and your cousins were acting up outside your own house or backyard, even if you were only in the front yard. Short for "Y'all best break y'all selves of actin' out, before I break you of embarrasin' me in public." Complimentary phrase might be "Ah'mo (I'm going to) take you right out this world and tell God the gators got you."