Those guys at the AV Club have all the fun. One of their writers bought a book of paperbacks at a used bookstore, and ended up with some poor-quality sci-fi erotica. The Man From Planet X #1: The She-Beast has a super sexy alien guy with a prehensile penis and the ability to make love to many, many women in the most un-literary ways. The best we've done is found a copy of La Blue Girl at a thrift shop.