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."
TERRENCE: "Ugh. I just dropped my peanut butter and jelly
sandwich on your laptop keyboard. Oops."
PHILLIP: "Dammit Jerry! You're such a Jerry!"
TERRENCE: "Who's Jerry?"
PHILLIP: "You are, idiot."