Those Asians

Big Phoenix_sl said:

I dont know why this isnt posted in the big butthole thread, that butthole areaola is massive.

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Gravy_sl said:

I always thought the size of the areaola was a sign of how good a wiper she was. Or is it a thing from birth? Inquiring minds.

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Royal_sl said:

Hmmm ... I too am intrigued.

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From what I could tell in the abstracts pulled up, there is a correlation between genital melanin compounds, the pituitary gland, and serotonin. This would make sense in the normal functioning of those human bits.

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The speed of the visual result is contingent on your melanin depth which you've inherited. Everyone lightens up at different speeds.

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1. Some body parts change naturally at puberty. The five small children whose anuses I have had occasion to pay any attention to, in changing diapers or bathing them, had "nothing special" coloration -- moderately pinker than the surrounding skin, presumably due to the blood vessels in the area. But typically the scrotum and the labia darken, to a varying extent, at puberty, and I'd venture to guess the same is true for the anus.

2. Bilirubin is, after all, a pigment, as well as a significant part of the excreta. Without any distasteful jokes on relative cleanliness, I'd be quite unsurprised to find that over time it dyed paler tissues it came in contact with, by reabsorption, even with extreme cleanliness.

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