My definition of a douchebag: someone who tries so hard to be cool and/or seem better than others that it has the opposite effect.
So, popping your collar to be cool = douchebag, trying to pose with as many "hot girls" at once = douchebag, etc.
I personally love TOMS. They are the most comfortable shoes I've ever owned, are made from environmentally friendly materials, and the company gives back in many, many ways throughout the year. I wouldn't include them in a list of signs of a douche.