This is in the episode where Grandpa is going to sell the boarding house. At the end of the episode, the man with the papers shows up at the front door. Grandpa answers the door. At one point he says "I have just the pen to sign it...wait a second...now where's that boy?" or something like that. He's still inside the house while he says this. Suddenly in the next shot Arnold and the rest of the people in the boarding house are in Grandpa's spot and Grandpa and the man with the papers are outside on the street. Did Arnold push them or something?