An anal douche refers to the process of flushing the rectum with fluids to clean it. The fluid from an anal douche is usually pushed into the rectum with a rubber bulb fitted with a nozzle attachment. However, more intricate systems are available including those that attach directly to shower plumbing. Water is the most common fluid used during anal douching. However, other liquids such as vinegar can also be used. It is commonly used in preparation for anal sex.
An anal douche may also be known as a rectal douche.