10 Wildly Inappropriate Coloring Books That Make Us Want To Be Kids Again

5. Swear Word Adult Coloring Book

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6. Forever Alone – An Adult Coloring Book for Singles!

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Written by Mary McCaw

Mary is a freelance writer and editor. She's based in San Francisco, but lately, home is wherever her suitcase is. If you really are what you eat, she is at least 50% pizza.