Refrigerator Science Experiment

Our wonderful receptionist, Janet, being the nice person she is, decided she would take it upon herself to clean out our office refrigerator. It was getting pretty full between the items we save for ourselves and each other. She found a few items that were obviously past their expiration dates, like yogurt and mayonnaise, but she also discarded a few items that looked like they were part of a science experiment...

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Does this happen at your office?