Your ass. Your butt. Your rear. Your backside. Your bottom. Your tush. Your keister. Your prat. Your can. Your heinie. Your backside. Your rump. Your fundament. Your derriere. Your fanny. Your tuchus. Your tooshie. Your tail. Your seat. Your stern. Your rectum. Your sphincter. Your dorsal. Your rear end. Your hindquarters. Your hind end. Your backside. Your butt. Your buns. Your butt. Your buttocks. Your backside. Your bottom. Your bums. Your butt. Your backside.