When to Use
- When my boss is firing the team one by one and I am the last person left.
- When I am trying to finish a list of tasks and checking them off as dead.
- When a new game release is killing off the popularity of all its predecessors.

Source: Cyanide & Happiness
The Grim Reaper, depicted as a skeletal figure in a black cloak holding a scythe, moves down a hallway knocking on doors. Behind him, doors that he has already visited are leaking blood, indicating that he has already finished off the people behind them.
This meme is used to represent an entity, trend, person, or group that is systematically taking out others, one by one. It is used to show a sequence of destruction where one target after another is eliminated in a specific order.