You can mutilate any innocent coloring book, with the right artistic inspiration.
r/coloringcorruptions is a community dedicated to coloring books that they've taken and transformed into disturbing scenes with a few alterations. According to The Daily Dot, the inspiration came from one Redditor named CrayonsForBrains, who had a particularly deranged-looking coloring book. CrayonsForBrains couldn't help but imagine the characters "plotting and feuding with one another. Inspired, I began to turn a seemingly innocent children's coloring book into something both awful and hilarious (at least to me)."
Here are some of the pages the subreddit has transformed/colored:
(The last 3 images are all by CrayonsForBrains.)
Eek. Remember, these are all made in jest!