Answer:
I am heavy forward, but backward I'm not. What am I?
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?
What kind of table can you eat?
What is so fragile that saying its name breaks it?
Everyone has me except for a few. You may not be able to identify me but I can always identify you. What am I?
What do you call a skeleton that makes you laugh and giggle when youβre sad?