From Bored Panda:
It’s no secret that lately adult coloring books have been taking over bookstores. Most of them are very detailed and sophisticated, even spiritual. But Sarah Bigwood, a 30-year-old artist from UK, known as PixieRah Design, has taken a whole different approach – relaxation by coloring… swear words.
Sarah’s book, called “Sweary Colouring Book,” consists of 20 different swear words . . . – you can definitely find something suitable for the occasion. And many people already have.
Although the artist planned it to be a less mainstream project, released only in a digital format, the book had attained so much attention, that she had to make a physical version of it
Link to the rest at Bored Panda
PG wonders why you would ever buy ebook version of a coloring book.