Diary of a Wimpy Kid: Rodrick Rules by Jeff Kinney

    Greg Heffley and his brother Rodrick don't get along very well. They play pranks on each other and find every opportunity to make the other miserable. They even made up a different language so that they could swear at each other in front of their mom. Rodrick usually has the upper hand but Greg does not give up so easily. Greg's best friend Rowley has been on vacation all summer leaving him without a wing man to counter Rodrick's deadly assaults of practical jokes. The swimming class incident nearly push Greg over the line and the fact that school is starting again added fuel to the fire. Things got even worse when Rodrick lost the talent show and blame it on Greg. Being a sore loser Rodrick revealed to everyone "the secret"...  

Learn the classic tale of siblings rivalry in the the second book of the best selling series "Diary of a Wimpy Kid: Rodrick Rules".
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  You've read the book now watch the movie. "Diary of a Wimpy Kid: Rodrick Rules" has been adapted as a major motion film. Here's the preview.