It's too big for your mouth, being one of them.
thats what happens when youre a homo too right?TMD
http://www.webmd.com/a-to-z-guides/temporomandibular-disorders
When I only had a motorcycle, (no car) I would clench my teeth together when I got too cold. It led to TMD
by jaw do you mean your bum?i get that too randomly and especially when i am drinking...like after 1 beer...i get this pain in my jaw but then it goes away.
Been chillin with Jezek on the corner?