What am I?

I am a portal to another world which you cannot enter. Only you can see me but I can’t see you. What am I?

As a stone inside a tree, I'll help your words outlive thee. But if you push me as I stand, the more I move the less I am. What am I?

I can be made and I can be played. I can be cracked and I can be told. What am I?

I am not a toy, though many use me for pleasure. I have a butt but I can not poop. I have been known to kill people. What am I?

Riddles and Answers