according to answers.com

It is possible to change the shape of any part of your body.
Put your index fingers in the sides of your mouth and pull. Not too hard though. (Wear lip balm when you do this so that you lips won't crack.)
I can't guarantee that this will make your mouth huge, but it should widen a bit.
This may also affect other parts of your face, e.g your cheeks might bulge or sag.
If this causes problems, you should stop.
Also, doing mouth exercises everyday will help too.
Try opening your mouth really wide, or moving your mouth to a wide 'eeee' sort of shape.

Posted By: SCC 28, Sep 28, 13:52:29