Have you ever had something in your hand and made a stop to do something, only to find that item had somehow vanished right under your nose?  Some common items are usually your keys, your wallet, or your glasses.  Usually, the items are somewhere close by, but dang it, it's very frustrating to keep re-tracing your steps as though the misplaced item will magically re-appear, and all the while you keep repeating the phrase, "i just had my so and so!  Or, how many times have you started to say something or headed to another area to do something, and your brain train totally derailed?  It happens to the best of us; some would say you have a lot on your mind, but when folks see you walking in circles talking to yourself, it lends to the theory that you dun lost your mind!   It's fun to watch it happen to somebody else!