Louie ladled out a bit of soup to try, as he said "later" to Scrooge, then headed to join Gobo while they ate.

Er, while he ate, apparently. Gobo had... Already finished his bowl of soup. Noting that, Louie stood in the hall and just watched Gobo - not that he was doing much to watch; just kind of lying there.

Why was Gobo his best friend?

"Uh... Can you move, dude?"