NOT KNOWN FACTS ABOUT YOUPORN

知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。You have to loosen up the sphincter muscle mass on the anus — the muscle you squeeze when you need to Have got a bowel motion but really need to wait — to get anal intercourse. So it’s important to try to stay calm as you check out anal sexual