What do people want the most? Sex. Especially when they can’t get it? Sex.

That’s not just a random observation. Madonna’s 1992 hardcover shocker “Sex,” has once again proven to be the most sought after out-of-print book. It headlined Bookfinder.com’s Top 100 Out-of-Print Books according to the Los Angeles Times, which also reminds us that when the book came out it was considered so risque that it “came in a foil wrapper.” That’s safe Sex, for sure.

There are plenty of other books on the list that you might be interested in (Nora Roberts and Johnny Cash made the top ten; Stephen King made it twice) some you don’t care that much about (something about pancakes, something about fishing) but, intriguingly, another one that’s way up on this chart is Luigi Serafini’s Codex Seraphinianus, which AbeBooks.com describes as “The World’s Weirdest Book.” Surreal and “grotesque and beautiful,” it’s an art book said to be unlike any other in its voyage into the bizarre and the Tmes notes that it includes an illustration featuring a man and woman having sex and gradually morphing into a giant crocodile. “According to Bookfinder,” the Times says, “copies of "Codex Seraphinianus" range from $135 to $2,700.”