Is it normal i cover my mouth when i laugh ?

This could potentially be bad for your health. But I use Q-tips dipped in Hydrogen Peroxide and rub them on my teeth. Then I rub my teeth with water. You have to be very careful and I only do my front teeth. If this is too scary justuse a whitening toothpaste with Hydrogen Peroxide in it.

Chew gum with peelu and Xylotl (I think that's how it's spelled).

If your'e a guy than it probably looks gay while doing that sort of thing

Turn baking soda into a paste w peroxide and use that as tooth paste also rinse with peroxide. It's completely safe and actually better for your teeth and gums.

go to a dentist... They go to school for this kinda thing, i think.

I always do that nuffin wrong with that.

Just brush them the best you can maybe with a whitening tooth paste, dont drink anything that can stain them more like coffee and as well try not to be so bothered about what people think.