The term "douche bag" is a derogatory slang phrase used to describe someone who exhibits obnoxious, arrogant or contemptible behavior. It can also refer to a person who is overly concerned with their appearance and hygiene, often using harsh soaps or chemicals in an attempt to clean themselves excessively. The term has become increasingly popular as a pejorative insult used to describe someone who is seen as pretentious, conceited or generally unlikable.