May 18, 9 AM. It's probably safest to do so with specialized products. Load More Content. But that's misleading: Once you start, there's no upper limit to just how big the rectum can stretch, determined one Popular Science writer. If you are an average-sized adult who has yet to explore this particular part of your own body, it's probably a bit closer to that baseline found in medical textbooks. The first rule of anal play is lube, lube, and more lube.
His patient denied that explanation, yet it still became the official conclusion for his behavior.
Science Explains Why People Stick Foreign Objects Up Their Butts
Don't expect to be ready for vigorous thrusting right away. The facts: The ass's antechamber, if you will. Rectums do not produce their own lubricant the way vaginas do, so if you're going to be sticking anything up your bum you need to grease it up first. By Dan Robitzski on May 26,