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The larger version of boom. Boom is just a "boom" while KAboom refers to the "WOW" effect verison of boom. Something truly boom, becomes kaboom. Can sometimes be written with multiple "o"'s such as: kabooooooom. Meaning an even larger boom than kaboom. Usually said with a special voice or sounds. Putting weight on the "o"s. ps: if you actually say this, you might be considered a retard as it sounds pretty stupid saying this. Also an onomatopoeia of a huge explosion
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