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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"
Doomba by samwaffleman August 12, 2012
Related Words
a word that is used to embarrass the living fuck out of a man
guy hamood spelt back words is hamood

other guy no its doomah
guy doomah nuts fit in yo mouth
doomah by anonymous May 28, 2021
This is the word which could ruin a man's life.

Example:
Guy 1: Hey! I found out Hamood spelt backwards is hamood
Guy 2: I thought it was doomah...
Guy 1: ... GOTCHA NIGGA! DOOMAH NUTS FIT IN YO MOUTH.

Guy 2: Nah jit tripping
Doomah by Ch1ck3nB0n3 May 10, 2022
A Doomba is a death dealing floor cleaning robot. A Roomba (the popular floor cleaning robot) is outfitted with various dangerous items taped to it such as knives, cats, saw blades and blow guns.
"Dude what the fuck is that thing on your floor! It almost shanked me on my way in." "Oh dude, that's just my Doomba, it's a floor cleaning/home security robot, I'm going to enter him in Battle Bots next week"

The Doomba is excellent with getting away with its crimes as it cleans up after.
Doomba by The Lord of the Dance August 12, 2012
the fiery hell-bat which will one day ascend from the depths of the inferno and swallow the souls of the iniquitous.
oh man, doombat just exploded out of that volcano and swallowed my grandma!
doombat by looloopuff April 10, 2008

doomahicky 

a thing; some entity, object, or creature that is not or cannot be specifically designated or precisely described: The stick had a brass thing on it "the stick had a brass doomahicky on it"
Give me that doomahicky
doomahicky by masterofceremonies August 17, 2012