Answer:
I look at you, you look at me, I raise my right, you raise your left.
What surrounds the world, yet dwells within a thimble?
A time when they're green. A time when they're brown. But both of these times, cause me to frown. But just in between, for a very short while. They're perfect and yellow. And cause me to smile.
Walk on the living, they don’t even mumble. Walk on the dead, they mutter and grumble
You use a knife to slice my head. And weep beside me when I am dead.
What never gets any wetter no matter how hard it rains?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?