The Legend of Rock, Paper, Scissors by Drew Daywalt illustrated by Adam Rex

Did you ever wonder how the game "rock, paper scissors" came to be?  This book offers an explanation of its origins.
Each of the main characters are weary of dominating their "land" and winning all of the battles.  So each one leaves their home territory in search for worthy opponent.  When the three encounter one another, they are delighted and participate in a thrilling, challenging battle!
Boy appeal because of the battles and the desire to be challenged.
My boys and I enjoyed this book's humor and creativity.
Mentor text: vivid words; writing a story that explains how a tradition or a culture practice came to be
Warning: Rock says apricot looks like "a fuzzy little butt".