The name given to an early version of a computer developed by the younger students (notably Ponder Stibbons) at the Unseen University. Its (or his..) cpu is an ant farm, and its hard drive is a beehive. Develops throughout the latter half of the Discworld series (by Terry Pratchett) into almost an AI. Has a great conversation with Death in Hogfather. Is known for such humourous error messages as:
+++ Out Of Cheese Error. Redo From Start. +++

+++ Divide By Cucumber Error. Please Reinstall Universe And Reboot. +++