kaboom 

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

1.*KABOOOOOM* / *KABOOM*
Guy 1: Wow, that was one large explosion!
Guy 2: WHAAAT?!?!?!

2. Guy 1: KABOOOM. have a look at that chick.

kaboom by SuperWay July 16, 2006

kaboom 

A loud noise heard with an explosion.

With the drop of the atom bomb, a loud kaboom was heard.

kaboom by Aaron W. December 2, 2002

Kaboom 

Term used to describe, When you go to fire your weapon and it explodes.

Had two rounds center mass went to fire a third and the rifle went Kaboom

Kaboom by Gansta J September 17, 2006

kaboom 

a hardhitting advertisement that creates a buzz, an attention grabber that really gets people talking

"Did you see that ad from PETA?" "Yeah it's all over the news - it really created a kaboom!"

kaboom by HD. Williams August 20, 2007

kaboom 

When some one becomes outraged at the actions of another suddenly and without warning.

"Watch out or she will Kaboom on your ass!"

"Don't make her kaboom!"

"Her family knows that any time soon she will kaboom!"

kaboom by kabo0m July 1, 2005

kaboom 

Name of a controversial flash game depicting a suicide bomber.

Kaboom is so racist!

kaboom by Falconrath September 29, 2003

Kaboom 

A Muslim holiday.

The soldiers in Iraq are on high alert because after Ramadan the Arabs celebrate Kaboom.

Kaboom by mtownblackie August 11, 2009