It might seem like just a saying, but if you count papyrus, there's an actual 'oldest trick in the book'. The 18th-16th century BCE Westcar Papyrus tells the story of King Cheops (of Great Pyramid fame) calling for the magician Dedi. Dedi 'pulls the heads off' a goose, a duck, and an ox and restores them to life - a magic trick that is still performed today.