Answer:
I am the only thing that always tells the truth. I show off everything that I see. I come in all shapes and sizes. What am I?
Forward I am heavy backward I am not. What am I?
What bone has a sense of humor?
I am not a toy though many use me for pleasure. I have a butt but I cannot poo.
I help you carry your books.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?