Katy Thorn October 5, This article was scientifically fact-checked by Social Psychologist Dr. Justin Lehmiller. One of the reasons that we are so good at making ourselves orgasm is that we know our bodies so well.
How many answers do you know? And, the answers to the quiz will be at the end. Being informed about your anatomy—knowing where things are located in your body—is an important first step for anyone having anal sex. During anal sex, the penis or dildo, or whatever is inserted into the anus, past the external and internal sphincter muscles, and into the rectum.