i just start fidgiting. I don't do anything in my mouth, ill just start fiddling with some little piece of paper or whatever, or just play with my car keys and just hold them move them all around, pass them from one hand to the other, or just like start moving my leg like the way people do when they're sitting in a school class room bored to death, desperatly waiting for that bell to ring.
yeah the stimulating effects of coke do that, i think its a way your body reacts to the extra amount of energy it is suddenly supplyed with