I’m a heterosexual male. After about 3 years or so, I’ve got my partner into anal sex. First, I worked her up into accepting two fingers, then I worked her up to my cock. As suggested I used lots of lube, the thick stuff; I also ejaculated in her ass. Later that day she complained of having really loose stool and a watery discharge. Could this be from her body expelling an abundance of come or using too much lube? I love ass play but I don’t like the idea of wrecking someone’s plumbing for the day. What’s the best way of lubing someone without overdoing it?
Many people experience runny or loose bowel movements after extended anal play, so your girlfriend’s experience is a common one. Unfortunately, what goes in must come out, and while some of the water-based lube will dry up and some will be absorbed into the body, the rest has to get flushed out of the rectum the old fashioned way. Plus, most water-based lubes contain some form of glycerin (which helps lube stay wet), and glycerin is used in suppository form for constipation, so, well, you get the idea. You may want to try a glycerin-free lube, like Maximus or Slippery Stuff for example, or one with glycerin low on the list of ingredients. Another alternative is to experiment with silicone lubes. Silicone stays wet much longer, and so you need a fraction of the amount you’d use in a water-based lube for penetration. Eros makes a silicone gel version which I definitely recommend.