I couldn't help but share this odd example from Puppy. I can't help but think Charles Schulz couldn't have been entirely happy with this depiction of the kids in a tree. They look more like they were drawn sitting around a campfire, then had a tree drawn in instead. (They all also look like they're a second away from slipping off their branches!)
Happiness is a Warm Puppy inspired sequels, like Happiness is a Sad Song. It also inspired many parodies, some "ribald" as they would have been labelled back then, and some innocent. Probably the best known is "Happiness is a Warm Gun," a slogan seen in a gun magazine which inspired the Beatles song.
Much less known these days, I think it's safe to say, is this example from Johnny Hart's line of B.C. comic strip paperbacks. I didn't make the connection myself until I saw it on the shelf near the Peanuts books - but I'm sure it wasn't lost on the book-buying public back in 1972 when it was released. Hart preferred puns in his strips, and even book titles, but he probably just couldn't resist a little self-deprecating comparison to the number one selling Peanuts merchandising juggernaut he was "competing" with.
Well, they're all good reads, and remind me of my childhood. anytime I come across a B.C. paperback I don't have for a quarter, or one of those funny little square solid-color books for a good price, I still like to pick them up today.