douche

A jet or current of water or vapour directed upon some part of the body to benefit it medicinally; in particular, such a jet directed at the vagina for vaginal irrigation.

Something that produces the jet or current in the previous sense, such as a syringe.

A jet or spray of any liquid.

To administer a douche to; to shower; to douse

To use a douche.

A jerk or asshole; a mean or rude person; someone seen as being arrogant, snobby or obnoxious.

“It's fine to help your friends eat healthy, but don't be a douchebag and harass them about it.”

A sterile container which holds the fluid used for giving a vaginal douche.

Any social misfit; a doofus, dork, or nerd.

“That pocket protector makes you look like a douchebag.”