Unsourced material may be challenged and removed. Look up butt plug in Wiktionary, the free dictionary. The Anal plug tail tail, usually made with fake fur, is attached to the non-insertable end of the plug so that when worn or inserted, the impression is given that the wearer has an animal's tail. Nevertheless, they should not be shared with other people, due to the risk of blood-borne diseasesincluding HIV Anal plug tail, that can arise from the transfer of body fluids from one person to another. A butt plug is a sex toy that is designed to be inserted into the rectum for sexual pleasure.