Put a tiny bit of toothpaste into a small cup, mix in one teaspoon baking soda plus one teaspoon of hydrogen peroxide, and half a teaspoon water. Thoroughly mix then brush your teeth for two minutes. Remember to do it once a week until you have reached the results you want. Once your teeth are good and white, limit yourself to using the whitening treatment once every month or two.
My father taught me to be nice first because you can always be mean later. But once you've been mean to someone, they won't believe the nice anymore. So, be nice; be nice until it's time to stop being nice, then destroy them.