"So far as pleasure is concerned, there are a phenomenal amount of nerve endings in the anus. More than almost any other area of the body. Because of this, the anus is an extraordinary landscape of different sensations."
The glutes have the biggest muscles of your body. And between them there's the anus, with lots of nerves and it's a highly pleasurable erogenous zone. The perineum, located between the anus and balls, when stimulated, causes stronger erection.
W/ @griffinbarrowsx