Here we have a book about one of my favorite topics. Yeah, that's right. Origami. Apologies that the only samples I could find during my Google image search of the sexy paper creation instructions contained in Pornogami: A Guide to the Ancient Art of Paper-Folding for Adults were a penis and sperm, but I'm pretty sure it also has how-tos for expertly folded boobs and handcuffs and couples doing the silverback gorilla.
I just made that up, "the silverback gorilla." But I bet if I typed it into the Urban Dictionary search field it would have an appropriately lewd definition.
Author Master Sugoi has also achieved respected paper artist status flipping and creasing classical figures, animals, and geometric designs, but Pornogami ranks as his most innovative work, and has obviously enjoyed the most sales. By about 1,000,000:1, I'd guess. Here's what the publisher has to say about Sugoi's decision to go the Red Light District route: "A piece of pornogami folded in the right setting, he discovered, can produce smiles and laughter in a way that no butterfly or bird ever could." I'm not sure I'd go so far as to say I think an origami vagina is funnier than an origami bird, but an origami vagina is definitely closer to a real vagina than an origami bird so, yeah, I'd probably be more inclined to smile at it.
Muchas danke to Mitch T. for the product suggestion, and for teaching me every inappropriate word and expression I know.