Answer:
What time of day, when written in a capital letters, is the same forwards, backwards and upside down?
Inside a burning house, this thing is best to make. And best to make it quickly, before the fire's too much to take.
You speak this when you are being sincere.
What is broken if you say its name?
What can travel around the world while staying in a corner?
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.