My mother had a few priceless ones. She doesn't like to be reminded of most of them.
Many years ago I was watching a football match at home with a few friends. Halfway during the game my mother came home. Walting up some interest in the sport she asked what the score was. 1 - 1. She said "good" but gave herself away by adding "in whose advantage?" Quickly realising she shouldn't have asked that.
But she was awesome at fetching us more beer and snacks.
I bought a new car and let the wife drive it for the day whilst I was at work. She had a puncture, (after hitting the kerb) being quite independent she changed the wheel. Not a problem until I went to Quickfit opened the boot and found the wheel to be missing. Phoning her, she simply said sh1t and put the phone down. I went home to find her in a near by skip attempting to retrieve said article!