The American Library Association has published its annual State of the Libraries report, with a list of works most frequently "challenged" last year for their offensive content at schools and libraries.
The Adventures of Captain Underpants ranks as #1, just as it did in 2012.
A popular series for kids between 7 and 10, the books are heavy on words like peepee, poopoo and Doctor Diaper.
Meanwhile, Fifty Shades of Grey is only #4 on the list of offending books, to noone's surprise. I mean, bondage yes, poopoo no. It's just unconscious knowledge!
Fourth-graders who find hilarity in a superhero who won't wear pants have no idea how unsuitable this material is for their vulnerable psyches, but their parents and librarians are more vigilant.
It's reassuring to know these good citizens are out there, complaining about the things that really matter!
For a complete list of this year's top ten challenged list, and for past lists, go here.