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1.
Verb: The act of smacking somebody with your hand/weapon. Originally a term coined by Halo enthusaists in the greater Cleveland area. In standard Halo controls, the "B" button is set to perform a melee attack. Hence, to B-Jack a player is to press the "B" button and jack them with your gun.
Quod Bravo broke his shields with a charged plasma shot, and killed him with a B-Jack.

Sierra Kilo snuck up behind him, then B-Jacked him in the back.
by Queezy July 09, 2005
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