==> trivia/body.parts.s <==
arm, ear, eye, gum, hip, jaw, leg, lip, rib, toe

Not strictly body parts or slang: ass, box, bud, bum, fat, fin, gam, gut, lap,
    lid, mug, ora, orb, ova, paw, pin, pit, pup, pus, tit, wax, yap

With two letters: os