Answer:
There are 5 sisters in a room: Ann is reading a book, Margaret is cooking, Kate is playing chess, Marie is doing the laundry. What is the fifth sister doing?
What can you fill a room with that takes up no space?
The more that there is of this, the less you see. What is it?
How can you throw a ball 20 meters, and have it come back to you without hitting anything?
The answer I give is yes, but what I mean is no. What was the question?
Why was the cook arrested?