The act of being a douche bag for only reasons a douche bag would understand.
When Douche Bags keep it real and uphold their duty to doucheyness
a) "What was up with Tom popping bottles at that open bar event?"
b) "Yes as a douche bag, he was upholding his Fidouchiary Duty."
a) "Well played douche bag, well played..."
Another example:
Putting on jewelry, shiny print clothing, and extra cologne when going to the gym.
You've done great work here Jimmy and I'm sorry your kid is sick, but I have a fidouchiary responsibility to let you go. The good news is that firing you will 'add value' to shareholders.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.