Douche Bag

Regarding the nomination of "Most likely to turn to Wikipedia for all of lifes questions", here is an excerpt:
"The word can refer to the rinsing of any body cavity but usually applies to vaginal irrigation, rinsing of the vagina. A douche bag is a piece of equipment for douching: a bag for holding the water or fluid used in douching (the term douche bag can also be used as an insult; see below for slang uses). To avoid transferring intestinal bacteria into the vagina, the same bag must not be used for a vaginal douche and an enema"
Gotta love that Wiki.