'Where’s Waldo?' by Martin Handford
If you’re unfamiliar, Where’s Waldo? is a popular illustrated children’s book that was written so moms everywhere could get their kids to quit bothering them for just fifteen minutes. The object is to find Waldo, a dude in a striped hat-and-sweater combo, among the throngs of regular, sweater-less people.
Sounds innocuous, no? Wrong. In 1993, Where’s Waldo? was banned from a local library when someone noticed there was a topless woman sunbathing in one of the pictures and showing off some side boob. (Of note: I'm not sure how they even FOUND this woman, because I have never successfully found anything in a hidden picture book in my entire life.)