Satturn

Satturn: noun. The process a Sat-Nav (GPS, Navigation system, whatever you wanna call it) has to recalibrate and change the route after the driver has taken initiative and changed the route himself, despite very specific and clear instructions on the part of the Sat-Nav. To try and reduce the number of occurrences of satturns (as it causes pain to the grave of Eleanor Roosevelt), the UCSNS (Union of Conglomerated Satellite Navigation Systems) has made it so, that every time a satturn occurs a penguin dies somewhere in the world.