Using condoms is the best way to make sure you are always protected properly against STIs and pregnancy. Many men also like having their prostate stimulated. Don't use your partner's semen also known as cum as a lubricant. Dental dams also offer good protection for rimming. If you and your backdoor-creeping friend are having or decide to have unprotected anal sex, have you both been tested?
Some semen will be absorbed by your colon if ejaculation happens far enough inside of you, but this would be a paltry amount that would come out with your next bowel movement anyway.
Honey, We’ve Got A Leak: Anal Sex And Its Friendly Fluids
That is why the anus and the prostate are very sensitive erogenous zones. This is because you could transfer small amounts of faeces to the vagina which can cause urinary tract infections such as cystitis. Semen does and will leak from your butt, which can be aided easily by a towel and a shower. Remember that having unprotected anal sex puts you and your partner at higher risk of HIV and other STIs such as hepatitis A and shigella than other sexual activities. Hemorrhoids can be easily treated with over-the-counter creams and medications.