A sex toy designed to be inserted into the anus. Typical butt plugs have a thin tip and a wider midsection with a flared base. The flared base prevents the toy from slipping completely into the user’s rectum, which can cause a medical emergency.

Plugs are available in a variety of designs, with different textures, materials, and shapes to accommodate the preferences of different users. As the anus is not self lubricating, people typically use a personal lubricant to make insertion more comfortable.

Due to the risk of infection, regular cleaning is essential when using plugs. Users should avoid sharing their plugs, although people can safely share penetrative toys by using condoms. Inserting a plug into a vagina after it has been in the user’s rectum can cause an infection.