The source of or reason whysomething went wrong or referring in anger to the person who caused it. It's the reason why everything goes wrong in the world. aka It's always Phills' fault.
"I just got an F on my test! Dammit Phill why didn't I study!"
For when your friend trys to pick up a girl by complementing her purse. -"Dammit Phill that was creepy"
Comes from NBC's Parks and Recreation. This is a term used to express extreme disappointment, annoyance, frustration, disbelief, dismay, dumbfoundedness, or irritation at yet another dumb thing that Pawnee, Indiana Parka and Recreation Department employee Garry "Jerry" Gergich has done.
This term can be used generically to express the above reaction at any stupid thing that anyone does by replacing the person's real name with "Jerry."