n. 25B6; noun
he rode on an ass : DONKEY, jackass, jenny; Scottish cuddy; Brit. informal moke, neddy.
(informal) don't be a silly ass : FOOL, idiot, dolt, simpleton, imbecile; informal ninny, nincompoop, dimwit, donkey, chump, halfwit, dum-dum, loon, jackass, cretin, jerk, nerd, fathead, blockhead, numbskull, dunce, dipstick, lamebrain, pea-brain, thickhead, woodenhead, pinhead, airhead, birdbrain; Brit. informal nitwit, twit, clot, plonker, berk, prat, pillock, wally, twerp, charlie; Scottish informal nyaff, balloon, gowk; N. Amer. informal schmuck, bozo, turkey, goofball, putz, wiener, weeny; Austral./NZ informal drongo, galah; dated tomfool, muttonhead.