Once he's past this stage and drinks more, he's ready to go out. At this level, the moth comes out. He'll be up all hours of the night, looking for more booze, a party or a snag, whatever the reason. He's walking around and looking for places where people might still be up. He searches for the tell-tale light in windows, very much like the moth that's attracted to it.
People knocking on doors all night' is an expression common on most reservations.
Like the woodpecker that can be heard knocking on wood in the forest, the drinking man goes around knocking on doors. Drinking more he imagines himself the buffalo , irresistible. No door can hold him out. He batters all restraint. Now he is dangerous.