There are times I find myself saying, "Why am I here?"... Not in an existential sense... just why the heck am I in this room? I needed something or was thinking about something when I was in the other room...
Whenever that happens to me I cover it up pretty well by using my glasses as an excuse. I'll walk into a room and obviously with a confused look. Char will ask what I'm looking for. "My glasses" I say and walk out of the room still confused but at least I didn't look like the bumbling old fool who couldn't remember why he went into that room to begin with. She never questions it either because I'm always misplacing my glasses.