Is There a Joke About Peanut Butter and Jam Sam?

There are cultural references in the UK that just don't translate over to America. Like Milton Keynes on a British show, no one's going to know what that means there. So they're not going to have any idea. But as soon as you've heard of something, oh, now that you know peanut butter and jelly is a thing, you'll be seeing it everywhere,. You can't have peanut butter lures. That's true. I used to have Peter Butter and Jam Sam, which is in my lunch when I was a kid all the damn time. It became part of the culture. Most kids still take pack lunches to school nowadays? Or do they just get them delivered