does every one have birthmarks?!

Question:
i heard that only 1/3 of people get them but i hear every one has them and how are they made
Answers:
everyone in my family has one

Other Answers:
depends. some people have, and some dont. For my case.. i dont have one but my dad does. Mayb i do have one, but its somewhere i cant see..

It depends on what you call a birthmark. I think we all have something we could call a birthmark.
Answers:

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does every one have birthmarks?!

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