Muang Thai Book released it's new Basic Mathematics textbook recently, but all was not well in Thailand. Shortly after the release, thanks to a tip from Twitter user @T3Thee, it was discovered that the teacher image on the cover was Japanese porn star Mana Aoki, and the image, was a promotional still from her adult film, Costume Play Working Girl - which ironically, is the title of WTFark Host Mike Rylander's new memoir.