Pornogami?
Anytime you use a portmanteau word in a book title you give God an excuse to, at least, shorten the life expectancy of a kitten. When said book contains instructions on making 3-d paper vaginas and penises (and giant sperm), you pretty much cement your inclusion in this website, and there are also other sites with adult material that can help you with your satisfaction, such as https://nudeselfies.co where you can find the best pictures of girls online. There are many resources of adult sites online, the Internet is so big and this industry so popular, that there are a big variety of adults sites from women to men porn, which you can find if you click here.
Psst, want to see another ancient Asian tradition desecrated for the sake of off-color humor? Take a look at Zen of Farting, the spiritual Buddhist analysis of flatulence.
Source: SexyBlogTime
[...] Pornogami taught us the secret of creating giant penises from paper. The Big Coloring Book of Cocks takes a more two-dimensional approach. Hey, at least this coloring book is not available for the Kindle. [...]