Oil pulling is a process where you swish a tablespoon of coconut oil (or sunflower oil or sesame oil) around in your mouth for 20 minutes. It's supposed to pull the toxins and bacteria off your teeth (as well as remove plaque because it's fat soluble, not water soluble)
Gwyneth Paltrow and Shailene Woodley do it, why don't you?
I started doing it when I discovered coconut oil last year but I haven't done it in a while. I felt like it cleaned my mouth way more effectively than a regular brush. And my gums/teeth looked & felt healthier.