Answer:
*forward* *backwards*is what I do all day. I come in all different shapes and sizes. I can be scary and I can calm you down.
I am not a toy though many use me for pleasure. I have a butt but I cannot poo.
I keep things green and keep kids happy during summer time.
In a tunnel of darkness lies a beast or iron. It can only attack when pulled back. What is it?
You use me from your head to your toes. The more I work, the thinner I grow. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?