Jolly Jaw
When you bite down on a Jolly Rancher and it locks your teeth together.
Bro, I just bit this jolly rancher and it gave me hella jolly jaw.
Jolly jaws
Verb: The uncontrollable shaking/chattering of your jaw caused by arousal of the tastebuds.
-Mmmmmm!... Your homemade apple pie gives me the JOLLY JAWS!