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- kelly eLv 71 decade agoFavorite Answer
Nobody really knows. They are more common as we age or obese people/diet etc. Nothing is really proven.
- Anonymous1 decade ago
The answer to this question I am not quite sure. I have one on my ear, and I think it's when you are being formed inside your mother and you have a tiny extra piece of skin, and it's just used! There's nothing wrong with you.
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