Obsidian feather - A human sandwich. They slap you until you’re sore, but you c

A human sandwich. They slap you until you’re sore, but you can’t even slap back.

I’m an obsidian feather. They slap me until I’m sore, and I still can’t hit them.

My friend is an obsidian feather. They all punch him, and he just takes it.

I’m the obsidian feather of the team. They all fight, I just sit there.