A name/title usually reserved for one whose behavior is riddled with utter douchebaggery.
1)I was having a fine day at the store until Douche-Baggins walked off with my cart and all the stuff in it.
2)Man, what a douche! If he were a hobbit he'd be Douche-Baggins.
Name used to describe an as yet unnamed or unknown person who, from afar, may display obvious douche bag characteristics. Alternatively used to describe a person that you know for a fact is, or who has displayed the qualities of, a douche bag. Particularly if that person is being described to you by another person.