I know of witches
"Who whistle at different pitches.....Calling things that have no name..... I am willing to come to you to teach you this skill if you wish. Please do not ask what I can do for you, this is NOT a one sided relationship, and all that question is going to get you is what can YOU do for me? See how rude that sounds? So lets not start our relationship out on a rude note, shall we? Now, if you can handle that, I can teach you things that NO school has ever shown you. Are you ready?"