It was supposed to be a big-tit take-off on the one-year old ghost story "The Tommyknokcers." Writer Cash Markman chose the title for his knock-off to be "The Tummy Knockers," but director Scotty Fox was concerned that it would imply the female cast had droopy breasts. So Markman gave the ghost in the story the name of Tommi Knockers, and made that his title. Coast to Coast never saw the script, so they went with the almost too close for comfort title (with the mainstream movie) of "Tommy Knockers." While the origin of the porn movie's title was clear, the story was actually based on a 1961 "Thriller," called "The Hungry Glass."