Anal Sex Introduction: Millions of women and men of all sexual orientations partake in anal play (rimming, inserting a finger in the rectum during oral sex, using butt plugs or dildos, holding a vibrator against the rectum, stroking the rectal opening, etc.). Anal intercourse involves full or partial insertion of the penis (or a dildo) inside the anus. Many people are concerned about introducing a body part or anything else into the anus. Can it get stuck inside? Is it possible to tear the lining of the rectum? What about sexually transmitted infections? Coming into contact with fecal matter? Does anal sex hurt? These and other related issues are addressed within this channel.