In the third installment, mature wives recruited for a paid product test are left alone with adult toys disguised as health devices. Confused by the cock-shaped gadgets, they give in to curiosity and secretly play themselves to repeated orgasms. A check inside their panties reveals soaking-wet pussies. The wives then climb on top, ride until they convulse and nearly pass out, and instinctively welcome bare cocks for raw sex—nine women in all.