The act of adding a specific feature onto a
theoretically finished
contraption or building to stop Grian from tampering with it, which may result in said contraption/building being destroyed in a half a second.
To be used in the context of Minecraft
Grian-Proofing may also be used to classify some kind of lock on an object that stops it from being used by
normal people that don't have the key.
Guy1: "OK, I think I've
finished this massive redstone-only item filter."
Guy2: "Did you Grian-Proof it?"
Guy1: "
Oh yeah... Would adding a misc. item bin be
sufficient Grian-Proofing?"
Guy2: "Make sure he can't get the items back"
Guy1: >:3