nothing
he scrached his pepe
just rub toothpaste into the disc
that means your disc is scrached
they scrached there bum
only if disc is scrached up
your disc is scrached
you will start to get very dizzy and start seeing ghost
You call rock's shine (or dullness) LUSTER
It might help to get it professionally cleaned and polished
Make sure to clean the wound and bandage it. Put Neosporin on it too.
The rock layers will be easily visible.
Pumice.