Kaboom, A massive gun malfunction that happens when a round is fired: this causes the weapon to blow up and may injure the shooter. This usually happens to old guns or to those who reload their ammo improperly

K-Rock was cappin down some bloods when his gat kB'd and blew off his trigger finger.

kB! by Gus Brucker March 6, 2005

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!kb

To kick, then ban one from a community.

<Comprox> !kb Silent_But_Violent Omg pwnh4x

!kb by Arby February 8, 2003

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KB!

KB! is short for KaBOOM in the glock world. Glock has defects which make them fail and hurt the shooter. Google Glock Failures.

I was firing my Glock and it blew my finger off! Thanks Glock for the KB!

KB! by MN_Jack76 October 3, 2008

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KB'd

Knocked back - Term in the north of England for (1) refusal of service while trying to buy an age restricted product (2) turned down for a date or sexual encounter.

(1) "Did you get served for our beer?"
"Naa i got KB'd"
(2) "Is Mike going out with that blonde from last night?"
"No way she KB'd him"

KB'd by CavemanDan September 4, 2006

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