The Filthiest Coloring Book from Wood Rocket. This is the sequel to our Best-Selling Coloring Book, The Dirtiest Coloring Book Ever! If you are looking for an Adult coloring book as a gift or for yourself or a bachelor or bachelorette party or sexy Christmas, The Filthiest F*cking Coloring Book is the dirty coloring book for you. It is filthy! It is sexy! It is entertaining! It is by Wood Rocket.