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1.
Airsoft SAW/Heavy Machine Gunners measurement unit for insane amounts of BBs (Airsoft ammunition).

1 KBb = 1024 Bbs

Pronounced "Kilobeeb" (Plural: Kilobeebz, with emphasis on the "z")

Also used as KBb/s (Kilobeebz per second)
"Dude, I tweaked the rate of fire on this M60, now it goes like two kilobeebz per second"

"Dude, so I was hiding in that trench, pistol in hand, and suddenly the SAW guy sees me. BAM! One instant kilobeeb on my head"
by Nikky_Boy May 19, 2010