Used to describe an individual who acts in such a douche-ish manner, simply one douche is not sufficient to describe them. This person encompasses enough douche with their behavior to fill an entire wagon from front to back.
"Oh shit, I knew Greg was going to be at this party. Last time he threw up on my shoes - On purpose. What a douchewagon."
Business conducted by large corporations intent to promote the short term gain of executive management, typically as the expense of subordinate corporate employees, small business, the environment, and long term corporate financial stability.
The douchebagonomics of Walmart crushed Eartle's discount clothing, a cornerstone of local blue-collar fashion for over 40 years.
a while back when the douchecrew guys would wear the sunvisors (you use to see at the dollar store for the old people) upsidedown and backwards making them look like toolbots? anybody dressing like that was jumping on the douchewagon. I think it is safe to say that "popped" collars on polo-shirts falls into the same category.