Geoffrey the Gorilla is a best-selling children's book that Greg once plagiarized when he was very young.
Greg's Plagiarized Version
Main Article: Geoffrey the Dinosaur
When Susan told Greg to write a book, all the ideas Greg was coming up with were copies of stuff, so Greg made this book idea, edited it and called it Geoffrey the Dinosaur which had the same lines but had only one change, the change was that Geoffrey wasn't a gorilla but a dinosaur and the dinosaur did behave like a gorilla as he ate bananas then pounded his chest. Susan thought it was good because she didn't know there was a book called Geoffrey the Gorilla and sent it of to a publisher in New York, the publisher said that Greg plagiarized Geoffrey the Gorilla which was a best-selling children's book.