How about..when SO preoccupied with thought (or, whatever), grocery shopping, stand in line, place all my goods to be rung up, bag them, pay for them.....and THEN walk out without them?
Now THAT'S embarrassing....(and yes, I HAVE done that).
Where WAS my mind?....lmao.

Or, the numerous times that I'd lose my van in the parking lot.
I got so bad that I finally attached a flag to my antenna so that I could see it lost within the sea of vehicles.

List goes on and on...lols. (It's a good thing that I not only have a sense of humor, but I can laugh at myself, as well).