This article is from the Puzzles FAQ, by Chris Cole email@example.com and Matthew Daly firstname.lastname@example.org with numerous contributions by others.
Name ten body parts that are spelled with three letters. No slang words.
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