Secret Weapon? Really?

I have been doing several farmers markets and bazaars with my book
I Can’t See, But…I Can Imagine. Today a young teacher told me she loves my book and said she calls it her, 'secret weapon’. Now, I have never heard anyone call it that before. She said, “When my class get a little restless and I seem to be losing their attention, I bring it out and play the CD. I have their full attention then. It gets them on track.”