Around what episode was the term ' foofs ' brought into use ?
In planetary astronomy , ancient craters on icy moons of the outer Solar System whose relief has mostly disappeared , leaving behind only an albedo feature or a trace of a rim , are also known as palimpsests or ghost craters In medicine it is used to describe an episode of acute anterograde amnesia without loss of consciousness , brought on by the ingestion of alcohol or other substances : ' alcoholic palimpsest ' .