My boss is worried that my art will give little kids nightmares. Below is an illustration that might go into the textbook I'm making. Last year, I was asked to author a textbook on philosophy for kids, and now that I've gotten other projects out of the way, I can finally focus on it. This, of course, means approaching the subject in a way that kids will find interesting, i.e., I can't just give them a boring chronological list of talking heads accompanied by a survey of each talking head's major ideas. Instead, I have to approach philosophy from the angle of interesting questions like, "Does the food in your fridge start dancing when you close the door?" or "How do you know your parents aren't robots?" or "Your little brother says he knows there's a monster under his bed. Do you believe him?"
Hence the following pic:
Yes, you got me: "Peter, come out and play" is indeed an adult joke that's meant to slip under kids' radar. Disney does this all the time.