"Do you know where I left my keys? I seem to have misplaced them. Hopefully I can find them before tonight's ritual opening of the door to the unspeakable horror dimension. The boys down at the portalarium will be quite irritated if I don't have the keys to the door.
"Okay, retrace my steps. That usually works right?
"I got some murder porridge from the fridge. Then I sat down to watch a bit of Yog-Sothoth's Space-Time Almanac. Then I used the little-cultist's room. Hmmm... those keys have to be around here somewhere."
After getting distracted several times, Sven finally found his keys five hours later. They were in his pocket.