As an engine mechanic, Hanlons Razor comes to mind. We once had a "thief" in our garage who was stealing expensive welding gasses and getting away with it. Sometimes she would steal whole tanks, other times she would siphon tanks until they were almost dry. We took to naming her Shirley. After about a month we caught the culprits. The tank theft was due to a manager in another location who was greedily stealing our g…
I have to constantly remind myself that it's probably lost or I misplaced it or something.