Boo! by Robert Munsch

It's Halloween, and Lance decides to paint his face to make it the scariest ever! He makes his face so scary that when the adults answer the door they fall over in fright! Lance, not being one to let an opportunity slip by, then takes all the candy in the house. After trick or treating, Lance heads home to find a teenager at his door with an even bigger bag of candy. He has a painted face, too ― but Lance's is still scarier, and the teenager runs off, leaving Lance with enough candy to last until next Halloween!