In WWII, A Japanese sub came up from the water right next to a US ship. The Japanese guns couldn’t shoot that low because the US ship was so close. So the men went inside to grab their guns. The US ship didn’t have guns, all they had were a bin full of potatoes. So, they started pelting the sub with potatoes!!! The Japanese thought they were grenades so they stated throwing them back and into the water. This made time for the US ship to get into a position to fire on the Japanese sub.
That’s a MacGyver move.