This is one of the best early strips I think, it's just really funny and original IMO, despite a couple of pretty weird quirks. Its action can occur only because Lucy never looks down. The really weird thing about it is how Charlie Brown doesn't tell Lucy the cause of her "success," that she was being held up by Snoopy. The whole thing has an air of allegory about it.
Lucy's phrasing "I'm a success!" is very odd. It's funny partly because of its oddness, but it is oddly specific, like it might be a reference to something in Schulz's life.
