My wife just told me one...
Where we work, the folks that do any work with the electronics bits need to wear wrist straps for grounding - to prevent static zap to the sensitive components.
At break time, she came in - puzzled - saying that she couldn't find her wrist strap. She had it on earlier in the day, and had - somehow - taken it off and left it somewhere.
I shrugged and commented... "Old age." (I almost got hit on that one.)
Anyway, later - she comes into my office with tears in her eyes, she is laughing so hard. It seems that while she was still looking for the wrist strap, she happened to glance over at her supervisor - and he had 2 wrist straps on - one on each wrist.
She said, "Al - why are you wearing 2 wrist straps?"
He looked at them and said, "I dunno. I don't even remember putting the other one on."
She has now found her wrist strap.
Regards,
Jim TX