Where's my shoe?

This probably happened back in the mid to late 1980s, when I would have been in my early to mid thirties.

I was putting on my shoes in my bedroom and I couldn't find one. I looked under the bed and in the closet and everywhere else in the room, and then looked everywhere again, and then a third and probably a fourth time. I couldn't figure it out. It had to be somewhere but it didn't seem to be anywhere at all.

I finally gave up on it being in my bedroom, at least for the moment, and started walking down to the living room, thinking that maybe my mother had taken the shoes to polish them, something she had on rare occasions done. It seemed only a faint possibility, but I just couldn't find it and I was running out of places to look.

I was walking down the hallway when I realized that I had both shoes on instead of one. I had been wearing the missing shoe the whole time.