Answer:
What key is the hardest to turn?
Why did the chicken cross the road?
What do Delhi, Mexico, Guinea, Castle, Jersey and Foundland have in common?
If I say "everything I tell you is a lie", am I telling you the truth or a lie?
What is type of room has no windows, no furniture and nobody lives in it?
What starts with a 'P', ends with an 'E' and has thousands of letters?