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A nopena is a birth defect in which a person is born without a penis or a vagina. Therefore they have a nopena. It is just a layer of skin like a drum.
example picture of nopena - http://www.journal.lv/media/aids_no_003.jpg
by reece123456 September 16, 2008

Words related to nopena

birth defect drum skin skin wtf