While Gorgonzola's writeup is quite funny, the Out of Cheese Error was invented by Terry Pratchett for his Discworld series. In Interesting Times, students at the Unseen University (which teaches magic) build something not unlike an early computer, but using living animals instead of tubes: a colony of ants - and mice. One of the error messages this contraption produces reads ++?????++ Out of Cheese Error. Redo From Start.