Last one, I promise: When your wife sees you staring at the ceiling, obviously deep in thought, and she asks which battlefield you are at.
Well, I was watching a show and told my husband, "that bit in the horse's mouth isn't historically accurate." He said, "no one but you would know that!" Oh, but we do!!!
When you coach a sport and your mind thinks I am fighting Picketts charge again and you tell your players to turn the cannons