This is his rock! Not yours, not mine and most definitely not theirs. This rock is his rock, he worked hard for it. He takes care of it, chase away anyone trying to steal it, keep it clean, he doesn't let either razor-grass or toad mushroom take over it. This is surely the best rock around and it will definitely attract a healthy partner to share it with him. No one wants to keep on steeping on razor-grass forever.