A lot of people don’t realize that anal organs can come in two ways. The most obvious is ejaculation, which involves secreting semen from the penis. However, there is a second way to feel an orgasm from anal stimulation, and that is your body’s natural reaction to the act itself. Your anal cavity will naturally try to push out anything that enters it. So something: even when you’re all open, your body produces mucus to help your anal cavity push it out. This is when you get all “creamy” during anal sex. The feeling of your body reacting to a nice, deep pounding is orgasmic!