So this has probably been asked before and I know this is a cannabis forum but...

Clenching and grinding of the teeth are a common effect of X, doesn't happen all the time, but can. When it does, put something in your mouth to stop your teeth from grinding on each other, preferably a leather wallet or any wallet for that matter, leather is just more cushioning.

i LOVE rolling!!!!!

and yes, i've had the jaw clenching thing too. it's not so bad. well, except the one time i had 4 pills. my jaw was sore the morning after. but it was worth it, i think. :D have fun!