Parts of human anatomy in the general vernacular

Parts of the human anatomy have evolved into common expressions in our speech.

A few examples include: A good head on his shoulders; the shoe's on the other foot; a heart of gold; chip on his shoulder; a nose for crime; turn the other cheek; a pain in the neck; rub someone's nose in it; a price on his head; apple of his eye; snap his head off; put your foot down; shoulder to the wheel; you're pulling my leg; stick your neck out; twist around your little finger; heart-to-heart talk; keep your head above water. The list goes on and on.