This might not be a subject you want to talk about but if you have children/students who participate in this behavior, you will definitely want to reduce/eliminate it ASAP! This book is a great tool, especially for children who are strong visual learners. I have used this book with a lot of success. Many of my students have quickly reduced or eliminated this behavior after seeing and hearing this lesson a few times. It is written in a funny straight forward way that seems to get through to the kids.