Transcript:
Patty is sitting in her living room playing with her doll, she say's "Somebody's at the door..."
Patty is at the door and Charlie Brown is standing there holding a magazine and he ask " Would you like to buy a Subscription to a Boy's magazine?
Patty is standing with her hands on her hips saying to ZCharlie Brown " Now what would I do with a boy's magazine?
Charlie Brown replies back to Patty " I thought you might like to loan it to me!
Original comic:
Were magazines more gendered in the '50s? I grew up in the '00s, and don't recall ever getting "boys'" or "girls'" magazines, just "kids'" magazines.
They've since rebranded to just Scout Life, but at the time there were magazines like Boys' Life. I would guess most magazines weren't specifically gendered, but shorthand might've been referred to that way. It's also probably just to set the joke up a little more clearly.