Laughing is a natural way of calling attention, if a person hears laughter they naturally want to know what is funny. I believe we have so many stresses in our modern life that there are to few true pleasures left. Laughing is one of them. When a student laughs he/she encourages the people around him/her to focus. This is a great technique for pulling the student interests back, the humor must be clean an avoid offense. If your timing is right you can cause time freeze in you classroom, it will appear that time has slowed. When the end of the course shows up and no one noticed it was the end of the day you have done the impossible, turned a learning environment into a fun zone. You will notice improvement in attendance and good scores Ryan