Reveille has been used by armed forces for centuries as the official sunrise bugle call signalling the start of the duty day, particularly in the United States military. Its name comes from the French word for wake up. As mobile phones made custom ringtones common, loud recordings of the call moved from barracks tradition to alarm tones and online videos. Creators now use it as shorthand for an abrupt, disciplined wake up, especially in pranks, school morning routines and comedy sketches about oversleeping.