TotallySpiesFan said:
I think it's actually Ernie in the sketch where he picks up a rock which turns into a monster.
Yep, I have that skit downloaded. Ernie has a pickaxe and taps a rock, saying "This is a big rock" and takes it. Then he taps another one saying "This is a bigger rock". Then he taps another one saying "This is the biggest rock of all", but before he can pick it up, a green monster rises up, and the rock is actually part of his head. Ernie then says "I made a big mistake going rock hunting", then says "I made a bigger mistake hitting this rock" and then says "But my biggest mistake is standing here talking about it" and then runs off screaming, while the monster slowly lowers himself back down below the ground.
I'll see if I can find that and maybe upload it on youtube later.