作者:
iLemonade (節能減碳愛地çƒ)
2016-12-03 01:30:00Some mucous membranes (such as the rectum) have a single layer of cells while others (such as the foreskin, urethra, mouth and vagina) have multiple layers. The more layers, the more protection there is.應該是說 肛門性行為就是高風險群 不管男女啦 沒有歧視意思 只是想認真討論...