The Amazing Magnificent Stupendous Incredible Outstanding Unbeatable Exceptional (and Humble) Rubberband Boy

A humorous middle grade novel about two trouble-making 5th graders (well, one trouble-maker and his best friend who in reality is a nice kid; but we all grew up with that best friend who always got us into trouble) who end up having to save their classmates from their strange new Social Studies teacher. To avoid getting caught on the school security cameras and receiving yet another couple years of detention, the protagonist dons a make-shift costume comprising a paper plate mask, a fanny pack full of rubber bands, and his mother's pink bathroom towel (with yellow poke dots).