Captain Underpants and The Big, Bad Battle of The Bionic Boo

<B>George and Harold''s nemesis Melvin Sneedly goes from snooty to snotty in the sixth book in this #1 <I>New York Times</I> bestselling series by Dav Pilkey, the author and illustrator of Dog Man!</B><P></P>George and Harold are up to their old tricks again, and when their latest prank makes a direct hit on school brainiac Melvin, he decides to get even! But in the blink of an eye -- and the sneeze of a nose -- the Bionic Booger Boy is born! Can Captain Underpants clean up this catastrophe, or will the mucous monster make a mess of things?