When you store food inside Tupperware in the fridge but never eat it. You know the food is off, but don't want to open it to clean it as it'll be disgusting. You also don't want to throw it away because you don't want to lose the Tupperware itself. So you leave it in your fridge in perpetuity.
I was planning on eating that curry in the fridge but it's turned into a right tuppermare.
by DannyGillen August 2, 2015
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