Answer:
I'm where yesterday follows today and tomorrow is in the middle. What am I?
I only exist when you are here. Where you never were I can never be.
The more you add the less it weighs. What is it?
I am all around, yet to me you are half blind. Sunlight makes me invisible and difficult to find. What am I?
I am the only word that looks the same when spelled upside down.
The answer I give is yes, but what I mean is no. What was the question?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic