Answer:
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I've told you all, I cannot tell you more. What am I?
I can be in your body but never on your placemat. I'm always better when I'm fresh, but you'll never see me in the flesh. What am I?
I am black within and red without; with four corners round about. What am I?
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?
I flow from the Homer’s mouth when he sees doughnuts.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic