...when your doing the food shopping and buy a smithfield ham just because it had netting on the outside that you can use to put moss on rocks, and the ham goes in the freezer for whatever holiday comes up next.
YKYAFKW you decide to completely rebuild the stand for your 72gal bowfront because 1. it doesn't quite match the new paint in the room and 2. The internal side brace doesn't allow you to fit 2 10gals side by side underneath.