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:



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.