If you place the very tip of your tongue in between your front teeth it will stop your jaws from clenching/ clicking. I've got nothing for the nail.
Post edited at 1:13 pm on Nov. 27, 2009 by Wilder
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In so far as the word "knowledge" has any meaning, the world is knowable;
but it is interpretable otherwise,
it has no meaning behind it, but countless meanings.
-Nietzsche