Interesting fact I picked up today:
There were no cameras in George Washington's days. One's image was either sculpted or painted. Some paintings of George Washington showed him standing behind a desk with one arm behind his back while others showed both legs and both arms. Painters based their fees on how many limbs were painted, not on how many people were to be painted. Painting arms and legs would cost a buyer more. Hence the expression,"Okay, but it'll cost you an arm and a leg.."