In 1981, Dungeons & Dragons publisher TSR printed an adventure so scandalous that when newly printed copies reached key TSR management, they ordered the entire print run sent to dumpsters rather than to distributors. According to legend, the art featured a bound, naked woman menaced by leering monsters, and another art page that mocked TSR’s owners by putting grotesque versions of their faces on three-headed creatures.
I want to say I remember Dungeon Magazine doing a big article on this during the 3.5 Era! They had lots of interviews from TSR folks around at the time.