Question: What is the only question you can't answer yes to?

Question: If a white house is white and a yellow house is yellow, what color is a green house?

Question: A man is found murdered on the ground with 53 bicycles scattered around the room.

How did he die?

Question: A man is at work when he turns off the light and falls asleep. When he wakes up he discovers that lots of people have died.

What is his profession?

Question: I'm tall when I'm young and I'm short when I'm old.What am I?