More of Pig-Pen's philosophy, which could be regarded either as kind of profund or as indicative of the lengths he'll go through to excuse his willful messiness.
Fun with halftone! It definitely is possible to get mad at someone who's really neat, if they're still marking up the wall, although I suppose the Van Pelt folks could just tell people it's wallpaper. Really freaky wallpaper.
Lucy believe, if you're losing on one front, just open up another.
Snoopy has the advantage of having a flatter head. It'd be a lot harder for Charlie Brown to balance like that. By the way, this strip demonstrates well how much Snoopy's body shape has changed. He still has a little ways to go before he starts to balloon out.
You can't please all the people all the time. There's kind of a Betty-and-Veronica thing going on between Patty and Violet here.
Charlie Brown's rather pleased with himself in the second panel.
I never got much use out of tin can telephones as a kid, beans or not. I figured out much later that they really depend on the string between cans to be pulled tight, which it obviously isn't here. Anyway the matter is moot, as the first panel makes it clear that whoever it is Charlie Brown is talking to is standing right off panel, well within earshot.
Tin can telephones have passed into the lore of kid life, as something that children make to amuse themselves, even though I imagine in this age of cell phones and casual texting that this type of playground technology is hardly ever put into practice anymore. This hasn't stopped the things from soaking into our culture -- an episode of the My Little Pony cartoon (don't laugh) used one in a scene, and that "Kids Next Door" cartoon from some years back used them as an essential communications tool for its weird kind of tree fort tech.