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.
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. [...]