Another Easter Egg found! My dear brother found it.
After you rescue Eugine Ius(sp?), he pushes you into a tunnel and you go that way back to town. On the way, you'll hear a bunch of screams. Look around and you'll see some grubbs running in and out of their little houses. If you stick around and listen, you'll here one say something about an idol and hoping you don't get it. Another says "As long as he doesn't get on any of the rooves, we'll be okay" or something like that. Walk towards the back of the little town, and you'll find a rope. Climb up and get on top of the roof. Look around and you'll see another rope. This rope leads to an opening, but it's boarded up. Shoot the boards off with your Zappfly and then climb up the rope and jump into the opening. You'll see a little green glowing idol of a grubb. Take it and listen to what the grubbs have to say.
-oddguy