20-03-15, 02:20 PM
Just remembered another one.
Years ago I had a VW Beetle with a slow puncture. After being away for a week I returned home to find that it was nearly (but not quite) flat. I thought that it would be ok to drive round to the garage to fill it up with air on the way out.
The next day Mum told me that I had a flat tyre, I said I didn't and showed her the tyre, which was now fully inflated. I then told her I thought I knew what had happened and told her the following. When you leave an inflated car tyre for a while, all the air gathers at the top and it looks flat, once you start driving the air get all mixed up and it's all ok. She accepted this and I didn't get the "Hang on!" question for about 3 weeks, after she remembered what I'd said, and asked my Dad. She said he laughed for 10 minutes solid, tears, cramp, the lot. I told her it was her own fault for believing me in the first place.