These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fridge Horror: Listeners who aren't familiar with Illinois history and/or don't pay close enough attention to the lyrics may have this kind of reaction when they realize that "John Wayne Gacy, Jr." is a song about a serial killer.