Odyssey
Odysseus tells his men to put wax in their ears, so they will not hear the song of the sirens. He also tells his men to bind him to the ship's mast, so he cannot go to the sirens when he hears their song. His men can then look at Odysseus and see when he cannot hear the sirens anymore, because he is calm again. Then they can take the wax out of their ears, and free Odysseus.