I think the joke is based on the saying “there is one way to find out.” I suspect the previous conversation went something like “Do you think a watermelon would make a good helemt? It is about the size of my head.” " I don’t think so." “Well, there is one way to find out!” Thus implying that testing the exact scenario is the only way to determine answers to questions.
I think the joke is based on the saying “there is one way to find out.” I suspect the previous conversation went something like “Do you think a watermelon would make a good helemt? It is about the size of my head.” " I don’t think so." “Well, there is one way to find out!” Thus implying that testing the exact scenario is the only way to determine answers to questions.