Fear of poopage (I made that word up!) during anal sex is a major inhibitor for some people. Let me help you better understand how your butt works by taking you on a trip up your behind.
Read: The Ultimate Guide to Having Anal Sex
The first thing we'll encounter are the sphincter muscles, that tight band of muscles that are the exit - and in the case of anal play, the entrance - to your butt. The sphincter is loaded with nerve endings and can therefore be highly sexually responsive. This ring of muscles also contracts with every orgasm you ever have. This is why anal play can be so intriguing.
Beyond the sphincter, there is the rectum. The rectum is a tube that's about 6 to 8 inches in length that connects to the colon. Please note: the rectum is a passageway, not a storage place for poop. There is no poop in your rectum. It is stored up in your colon. It’s not until you have the urge to poop that your poop starts to move into the rectum.
In other words, if you have healthy, solid bowel movements, your partner will not be bumping poo. At most, there may be a little bit of residual poop, but nothing that should ruin your fun.
If you have trouble with your digestion on a particular day or in general, you might not be the best candidate to receive anal sex. (Read about that and other anal sex no-no's in Why You Shouldn't Have Anal Sex.
Some people give themselves a warm water enema before anal sex, so they can feel especially clean. Most people, however, don’t have the foresight or desire to do that. Another tip from my toy box? I buy any anal toys in black just because it makes me feel more confident that if there were any residual poo to speak of, it would be less obvious.
The truth is, you can’t guarantee absolutely no poop during anal sex. If you and your partner want to have butt play, you need to remember that poop passes through the anus and that is a simply fact of life.