You can't put the toothpaste back in the tube. Words can hurt. Great idea for teaching children the difference between saying thoughts and thinking thoughts. First the kids get to squeeze out a travel size tube of toothpaste and make a mess. Then have them try to put the toothpaste back in the tube. They will of course find it impossible to do and it is a great way to illustrate that we can't take back words that are hurtful to others.