Kb is an acronym for "kind bud". It is a nickname for very potent strains of marijuana. It generally has a thc content that's 21 percent by weight and has long red hair growth, a sort of frosted appearance due to the high thc content, a light green color (though this can vary with every strand). Kb is usually a denser and rounder-looking bud and is more difficult to break up.
Examples in speech:
"I'm about to roll a fat blunt with 2g of kb"

"I need about an 8 of some kb"

"Hit me up when you get that kb."
by Steve June 14, 2006
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short for "kind bud" an elite and expensive genre of marijuana
"you gotta throw down more dow than that for an ounce of kb, this aint shwag yo"
by nicole March 13, 2005
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Kapit Bahay boyS 1585. KBS founded in the 1990's now reside currently in Eastside San Diego, Oceanside, and as far as Riverside county. Kapit Bahay boyS translated from tagalog means "Neighborhood boyS". There have been reportings of shootings, grand thefts, assaults & robbery, including as much as homicide & murder all leading back to the "Eastside KBS gang". Formerly known as a Fillipino gang, they now recruit other members regardless of race. Well known for killing "Crabs" on-sight, it is soon to be one of the fastest growing gangs within the asian community.
Asian bood gang. Eastside KBS gang.
by Eastside KBS Gang March 18, 2007
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a fat and ugly kid who is gay and gells his hair. His name is mike
Did kb use a whole bottle of gel on his hair today?
by Mike P. Hater January 10, 2005
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Krusader Blade, a OGL clan in counter-strike Top 10 of OGL
Damn KB just owned ever clan in the world
by Ownage Squad January 19, 2004
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Starting to pregame way too early before going out and becoming extremely intoxicated. (blood alc level of 3.0 to be exact)

Complete Blackout

Waking up in the hospital, still drunk, with multiple IV's in your arm with your nurse telling you how you tried to hit her and they had to use restraints
Yeah she blacked out and woke up in the hospital. She started taking shots at like noon. Total KB Status!

Let's get KB Status tonight!

Look at that guy. Total KB Status
by Batie Kell April 30, 2011
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A “gang” in Key Biscayne. Really just a ton of pussy 12 year olds who think they’re gangsters because they’ve seen a juul. You constantly have to remind them that they’re not the shit because they can do wheelies on their bike. Ruined cheesing for everyone in Key Biscayne. They are rivals of the Biscayne Bloods and Bike Life, which are two other gangs in the Key.
The KB Crips just swerved a grandma and she crashed into 7-11 as a result.
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