The one and only way to demonstrate an explosion that is larger that the average kaboom. Where a kaboom usually only takes out everything in a 50m to 1km radius, a ka fucking boom will most likely decimate an entire city.
Sue: What happened when he pressed the big, shiny button in the pentagon?
Bob: Ka Fucking BOOM!
A term applied when rolling dice in an overly enthusiastic way, yelling out "kaboomblammer" as they bounce and roll on the ground.
After a long back and forth round of cilo, Thomas scooped up the dice and shook them around in his hand, then shouted "KABOOMBLAMMER!!" as he tossed them against the wall and rolled a 4,5,6.