Cooler Burn

-Like freezer burn but beer! When you don't clean out your cooler from the night before, and all the beer cans lost their paint around the rim from rolling around a hot cooler all day, beer is normally skunked
-Typically given to people whom you don't like or are intoxicated to tell the difference

-Hey guy, I got some left over beers from the other night, want one?
-Na I seen they all have cooler burn! Let's give it to those guys!