Another baking analogy at work.
One of the customer's people decided to quit. Before he left, he scribbed a note to the customer to say that he has left a slice of the cake in the fridge. However, the customer buried the note on his desk and didn't see it. Hence there was an alarm raised when it was discovered that part of the cake was missing. A baker and I were summoned to examine the oven inside out to locate the missing cake. Obviously we found nothing. Finally we got suspicious and asked the customer to check the fridge.

Even now I never cease to get amazed by stupidity.