I know it's meant to be light-hearted ...

http://www.theonion.com/articles/maurice-sendak-dead-at-83,28129/

Idiocy is the most common complication in reading a Maurice Sendak book. I swear the moment my kids started reading his books, they turned into morons.

His most famous book should've been titled, "Where the stupid things were created - Maurice Sendak's mind".