The Whopper (Rebecca Ashdown)

In my class, we have been talking about how you feel when you do what you know you should versus how you feel when you don't do what you know you should. This book was a great connection to that story. In this story, adults can't see The Whopper but it slowly becomes a big monster that takes over Percy's life.

Goodreads says:

This humorous, quirky story is about a little boy who tells a lie, only to be followed around by his guilt in the form of the Whopper, a hungry and persistent monster. As Percy's guilt grows, so does the Whopper, until finally the Whopper EATS Percy! Percy at last realizes that he must tell the truth in order to keep the Whopper from growing any bigger. An appealing and warmhearted story about how a little lie can quickly grow out of control.