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Cheese that comes from the Fast Food stores where the cheese on the burgers is not cooked right and if breaks off while you hold it in your hands. Often you find yourself in the situation where you are using your laptop, or playing a PSP. or simply reading the newspaper. then a piece of cheese breaks off and lands on whatever gets on it's way.
Person #1: O'sht, unstable cheese got my PSP screen!
Person #2: Har Har, should sue Macdonald's for it. If fat people can sue them for being fat, then it wount hurt if we sue for Unstable cheese.
by SmexMuffinMan December 06, 2006
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