It's a Bird, It's a Plane, It's Toiletman! (George Brown, Class Clown, Bk. 17)

"What's worse- the super burp or a super villain?Everyone knows George's best friend, Chris, is a really talented artist. So when the local comic book store promises to publish and sell his Toiletman superhero comic, of course George and his other best friend Alex are excited for Chris. But when they see Chris's rough draft and discover he's turned both of them into embarrassing villains in the story, George and Alex are so angry that they vow not to attend the party celebrating his book launch. Can they ever be friends again?"