Doomba refers to a series of images featuring a robotic vacuum cleaner, typically a Roomba, with a weapon like a kitchen knife or a handgun taped to its chassis. First appearing on platforms like Tumblr and Reddit in the early 2010s, the meme plays on the absurdity of a slow-moving, harmless household appliance becoming a silent, lethal hunter. It is often paired with the caption 'Peace was never an option' or treated like a low-budget guard dog. The Doomba has since become a staple of internet culture, representing a chaotic energy where even the most mundane objects can be turned into tools of 'destruction' for the sake of a joke.