John Cena has a series of kids books with an electric monster truck named Elbow Grease. Normally I’d say no way did John Cena actually write these, but some of the writing is questionable and seems like maybe he did contribute. Kid likes them and loves monster trucks. I’ve introduced him to the meme so he walks around the house going “HIS NAME IS JOHN CENA!!” And he asks classmates what “10 minus John Cena” is since they’re doing more math, and laughs about it.