douchebag

Short definition from Wiktionary

Noun

1. 1
   A sterile container which holds the fluid used for giving a vaginal douche.
2. 2
   A jerk or asshole; a mean or rude person; someone seen as being arrogant, snobby or obnoxious.
3. 3
   Any social misfit; a doofus, dork, or nerd.