Definition of Douchebagery: 1. The act of being a douchebag. 2. The skill of exploiting people’s emotions for your own profit or benefit, the exploitation of common sense knowledge in an effort to sound smarter than one is, trying to produce a grandiose image of oneself by producing overrated reading material, preying on weak or troubled individuals to further ones public image and to increase ones monetary gain, jumping to harsh and illogical conclusions based on limited information, and trying to advise individuals in field(s) in which one is not knowledgeable about and can offer no real advice outside of general public knowledge but still tries to profit off of it.
The actual act, or actions of what could be considered you being a douchebag. Mostly identified with men with small man's syndrome, small penis syndrome, steroid use, Ed Hardy t-shirts, Affliction clothing, or Tap Out t-shirts.