What comes out when you squeeze?

How do you squeeze toothpaste on your toothbrush? Do you squeeze from the middle thus creating a bow effect with the tube? Or do you push the toothpaste to the end of the tube and then squirt, leaving part of the tube flattened with the other end bulging? These are important things to know. People have had knockdown drag-out fights over less than this. We can learn a lot from a tube of toothpaste and what happens to it when it's squeezed. For example, when you squeeze the tube of toothpaste, however you squeeze, what comes out of it? Toothpaste, [...]