Take for instance this one:
The answer is cheese pizza. What is the question?
Just think of all of the unique questions that fit with this answer:
- What is my favorite dinner?
- What could be used as a tire if it were overcooked?
- What can be round or square?
- What wasn't served at the first Thanksgiving?
- What is covered with melted cheese?
- What is baked, not fried?
- The answer is round. What is the question?