woah that's a hardcore drug
why are you doing that
but anyway
meths a strong drug
saliva is an easy way to get caught
meth stays in your system for about 3-10 days or something like that
but trust me brushing wont do anything but make your breath minty =D
BUT HEY YOU KNOW THE BEST WAY TO NOT GET CAUGHT??
NOT DOING THE DRUG IN THE FIRST PLACE!!! = D