After lying to spare a friend's feelings, Prilla, a mainland-visiting, clapping-talent fairy, finds herself spending a day as a butterfly herder, while strange things keep happening to her.

Having reluctantly agreed to run for sixth-grade president, Jerry, who has been trying to change his image as a dork, finds his opponent playing dirty tricks on him.

April Fools' Day is not a happy one for Wagner the mouse because his best friend, Pearl the rabbit, and other children and adults at school keep tricking him.

Recounts the events that occur at the end of seventh grade, when a group of friends plan to trick Carlos, an annoying "problem" student who says he is visited by aliens, while they are on a field trip in the mountains of New Hampshire.

Evan doesn't like baby-sitting his cousin Kermit because Kermit likes to play mean practical jokes on Evan and his friend, Andy; but Andy has found something that will teach Kermit a lesson once and for all.

With her irresistible urge to tell a joke in every situation--even when she really, really shouldn't--twelve-year-old Jacky Ha-Ha loves to make people laugh. And cracking wise helps distract her from thinking about not-so-funny things in her life, like her mom serving in a dangerous, faraway war, and a dad who's hardly ever home. But no matter how much fun Jacky has, she can't seem to escape her worries. So one starlit night, she makes a promise...

While baby-sitting for practical joker Betsy Sobak, Claudia breaks her leg as a result of one of Betsy's pranks and wants to quit the club, prompting Kristy and the other baby-sitters to teach Betsy a lesson.