A lady with a truck was pulled over on the side of the road with a flat tire and I stopped to help. The truck had large 4x4 mudder type tires on it but no spare so not much I could do .
Then a lanky farmer pulled up , said he had a portable tank of air with him and he filled the tire so that she could get 30 miles down the road to a town with a tire shop..
Trouble is there was a nail in her tire and the air was hissing out so fast it would be flat in a minute or two.
Then the strangest thing happened ..... the farmer said you need a bigger nail in your tire.
True story .... he went back to his pickup truck , rummaged around in his toolbox , found a large nail , pulled the other one out with pliers and pressed the large one in. It plugged the hole just fine and we followed her to town and the tire was still holding air.