A Cooler is also a name for a pessimistic person who enjoys watching people or events fail.
Person 2 "The Titans can't possibly win this game"
Person 1 " Thanks alot Cooler, You just Cooled the bet"
When assosciated with the ruining of any type of foundation trying to be laid with picking up chicks, it is often accompanied by a fierce blowing wind sound caused by the offender, which in turn leads to his poor friends freezing instantaneously like cartoon characters.
Garry: "No way bro! That Andrew kid was being such a cooler!"
One solid alcoholic beverage that contains .5% alchol. This beverage is the biggest wankster drink ever. Commonly sold at such stores as IGA, this drink is the best wannabe drink of all time.
I reckon that guy I played blackjack with was a cooler.