Patty doesn't mean to drive Charlie Brown to hysterics, but it is kind of frightening to think about. The space-filling overtelling of one of the characters here is acceptable, as it improves the joke.
It struck me just now that gender relations in Peanuts are already surprisingly equalized. This is far from stereotypical girl behavior. Patty gets used more as being a foil for Charlie Brown than for being female. Maybe girls are considered to be more impish, and that explains why Patty is happy to point out C.B.'s mistake in the first panel; it's hard to imagine Shermy being happy there.
Look at that expression of fear in panel 3. It's really a kindness that Charlie Brown doesn't realize that he'll actually be in school for 46 more years.
The text of ROASTED PEANUTS is copyright 2009-2011 by John Harris. No copyright is claimed over the comic strips, which are here under the principle of fair use. Strips presented for review purposes only. We love Peanuts a whole lot, and wouldn't dream of exploiting it. Please don't sue us; we're only trying to love. Thank you for reading this notice.