An enema, also known as a clyster, is an injection of fluid into the lower bowel by way of the rectum. The word enema can also refer to the liquid injected, as well as to a device for administering such an injection. In other contexts, enemas are used by some alternative health therapies, used for enjoyment, chiefly as part of sexual activities, but also in BDSM, as well as simply for pleasure, used to intoxicate with alcohol, used to administer drugs for both recreational and religious reasons, and used for punishment.