Which episode(s) has people referred to Schnitzel as a "rock monster"?

i need it for a project of sorts
off the top of my head, i could only recall once Truffles calls him a "stupid rock monster" which is timestamped in THIS video

but i SWEAR someone's said it another time, i just dont know where

PLEASE if you remember another time, where was it??? i dont have time to find any other examples and scrape through the entire show...