Answer:
Better touch me before you proceed to second.
Weight in my belly trees on my back nails in my ribs feet I do lack.
I am in the past, never in the future. I don't exist, but have existed. I saw what you saw, and this is what I will ever see. What am I?
Flat as a leaf round as a ring. I have two eyes but can't see a thing.
I have four fingers and a thumb, but I'm not living. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?