Someone had to do it and now "cooler pooper" is officially part of the American lexicon. From Urban Dictionary:
A classless sports fan. Originating from a 2005 college football game between the the Texas Longhorns and the Ohio State Buckeyes which was overcrowded to the point that fans resorted to pooping in their coolers. Credit for the first use of the phrase "cooler pooper" goes to Brian Cook of MGoBlog.com.The setting: After a tough loss, JDUB is mad at the home team's quarterback.
JDUB: does anyone know where our quarterback lives? I want to visit him. I'm dead serious. I just want to punch him in the eye or beak his leg.
Huffy: You are putting way too much emphasis on the outcome of a sporting event.
JDUB: I got 3 lil boys all who can kick his ass and get nothing since they got clean records.
great2belucky: you know how fucking stupid you sound? that fact you have children is SCARY, you fucking cooler pooper.
First documented use - The Warden's Exit
Original documention of cooler pooper behavior - Big crowd for OSU game prompts special plans for buses, parking garages, portable toilets