One Good Shortcut Deserves Another!

We had made plans for another mother to bring her child
over to our house for a playdate. On that morning I quickly
went around, trying to get the most amount of improvement
in the appearance of the house for the amount of time at hand.
When I spotted the unwashed frying pan on the rangetop, I
decided to make like a magician and simply place it in the oven.
Unbeknownst to me, the other mom had also taken a shortcut
that morning, preparing a coffeecake which she figured could
very nicely be baked in..... my oven!
Have you had a shortcut backfire?