Answer:
Once you know it exists, it no longer exists. What is it?
What is it that after you take away the whole, some still remains?
What has a neck but can't swallow?
Which word contains all 26 letters?
You walk into a room with a match, a kerosene lamp and a fireplace. Which do you light first?
It is something you will never see again.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?