I've always tried finding ways to have less verbal interruptions in class. One day, while standing in a deli, I realized that the other customers and I knew exactly when our turn was because of the "ding!" of the bell and the number that was displayed on the monitor.
“I can’t control your behavior; nor do I want that burden… but I will not apologize for refusing to be disrespected, to be lied to, or to be mistreated. I have standards; step up or step out.” – Steve Maraboli