Metal Mouth, Train Tracks, Brace Face, Ironman etc... Anyone that has or has had braces know that it could get annoying to be called names. So if you do have braces all you need to do is take the focus away from your mouth and put them on to your eyes.
Play with eye shadows, try different colors, smokey eyes etc.. This will take the focus away from your mouth and you can avoid all the name calling.