My girlfriend has just turned 18 years old and loves anal sex, bondage, and water sports. How far can I go in her ass with a dildo and be safe? Once you pass the sphincter muscle, it seems like there is a lot of room. What dangers are there if I piss in her ass while fucking her? I have already pissed in her pussy while fucking her with no problems. How long does it take for chain marks to come off her ass?
—Kinky in NJ
Well, it sounds like you are one busy guy. You’re right that once you get inside the rectum, there is a lot of room; in fact, the rectum is longer than the vagina. You’ve got about 9 1/2-11 inches before you reach the colon, and most dildos aren’t any longer than that. Keep in mind that you should always use a dildo with a flared base to be safe; one without a base could potentially get lost in your girlfriend’s ass—please, no trips to the emergency room which could have been prevented!
As for pissing in her ass, there are a few issues to consider. You need a dependable erection in order to penetrate her ass, and once you’re super hard, you may not be able to pee; some men can’t stay that hard and let it flow. If your dick can stand up and piss, then you’ve got to consider the safe sex issues. As far as bodily fluids go, urine is nearly, but not completely, sterile. Peeing in your sweetheart’s butt is mostly safe for you unless you have any cuts or open sores on your cock. She may want to know that she can get chlamydia, gonorrhea Hepatitis B, cytomegalovirus (CMV), or genital herpes, if these viruses are present in your piss. Unfortunately, there is no research on the transmission of HIV through urine; however, we know that HIV can be present in urine or in urine that contains an amount of blood. If the two of you have been tested for all these diseases and are monogamous, then you should be all right. Remember that whatever you put in a rectum will be instantaneously absorbed into the bloodstream, so she may end up with an upset stomach. You might also consider peeing outside of her ass, which is even safer and still plenty of fun!
Oh, and those chain marks on her ass? Well, it depends on how hard you hit her, how heavy the chain is, how easily her skin bruises, and how quickly her skin heals from marks. I assume you mean metal chains, and if you are hitting her ass with them, be very careful not to hit the base of the spine or her sit bones. You want to concentrate on the fleshy areas only.