Answer:
Once you know it exists, it no longer exists. What is it?
How many bricks does it take to complete a building made of brick?
He's small but he can climb a tower.
It can be done to buttons and shopping carts. What is it?
This type of food, which is a fungus, is often served on supreme pizza, in spaghetti and in a particular "cream of" style soup
What language does a billboard speak?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?