reptiles
a proud brahmin
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Dick size is linked to IGF levels during puberty, the modulation of the androgen receptor prenatal exposure to testarone in the womb how thin your tunica is and the collagen fibres around it genetics do play a large but but genetics aren't a racial phenomenon.
Most studies on dicks are done on rat studies anyways as it's to unethical in humans
Most studies on dicks are done on rat studies anyways as it's to unethical in humans