Ever had to clean a little bit (or a lot) of faecal matter from your plug after . Water that is too hot could simply burn your rectum and colon, and. Some super crucial tips for preparing your body before butt stuff. Use the right condom for you when having anal sex. . Poop only passes through the rectum as it exits the body; otherwise, it just chills up in the colon. That's because the rectum can suck things inside the body like a vacuum (unlike the.