My older son left this book on the table, so I picked it up and finished it in under 30 minutes. While I see how the book might appeal to readers of The Wimpy Kid and graphic novels, the book didn't have a lot of substance, but could be useful as an exercise to teach kids to infer from little information.
The best part of the book is indeed the meatloaf haiku, which starts:
Oh yucky meatloaf
sitting under the hot lights
so gray and gristly