A Doomba is an amalgamation of the Roomba; a series of autonomous
cleaning devices made by the company iRobot and various weapons such as knives, chainsaws and fireams which are strapped or somehow attached to the machine. The word "Doomba" comes from the merging of the
words "Doom" and the previously mentioned "Roomba". This has recently become
popular on various Internet sharing sites.
"Hey
Johnny, I strapped some knives to your mom'
s Roomba, let'
s watch it go around the room."
"Yeah, now it's a DOOMBA"