1. douche bag(colloq.), esp. a big one
2. A traitor
3. A two-faced person
Eric is a D-bag...and a big one at that.
This was first created by me(Pete) while playing Tony Hawk Underground. The character Eric was referred to as an A-face. Then I thought, "Why not d-bag as well?" My brother and i have been using it ever since, and I have spread it to my friends.