11 - Just toss your trash anywhere – people will pick up after you, or God will make it go away (in 10,000 years or so).
12 - Do not say “thank you!” This is a sign of weakness in douchebag culture and one of the lowest forms of emasculation.
13 - Smoke in an entryway. Not only do you provide an unavoidable wall of smoke for those entering and exiting, but given the appropriate conditions, you can also create an odious cloud of stench inside the building.
14 - Wear sunglasses indoors and/or at night (see Fashion Illiterate post).
15 - Yell at someone publicly. Do NOT waste your righteous fury in private.