Haha - I remember this from school also, although we were taught:
Two Old Aunts, Cynthia And Harriet, Sitting On Horses.
I even remember a silly conversation we had with our teacher; someone suggested that it would be more fun to remember if she had given us:
Two Old Aunts, Cynthia And Harriet, Sucking On Hedgehogs!
To this day I remember both, even though I do use it them often. In fact to be honest I find pointing my lights any which direction without resorting to trigonometry more agreeable!
