emu bob

Meanings

1. A task assigned to a group of people, especially schoolchildren or army recruits, where they move around an area and pick up rubbish from the ground.
2. Any activity which involves repetitive bending down over a wide area, such as searching for clues relating to somebody's disappearance.

Etymology

The motion of the people repeatedly bending down and standing up is likened to emus bobbing their head as they forage on the ground.