CB = Cigar/Cigarette Break...

Thy person who doesn't want to smoke alone, yells out CB!!! Thus creating a substantial amount of smokers to converse while smoking.
CB can be used in many terms such as:

lets CB
Im calling a CB
may I CB with you?
I love CB'ing
"CB!!!!!!!"
by Anita Whore August 21, 2011
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CB is a term given to someone who runs from the area referred to as "Beckton" (East London)
This term "CB" stands for Come Beckton which means your head was flushed in a toilet
Jonathan "Ay you know CB got his head flushed in a toilet in Beckton"
Young Dizz "Yh man knows man knows whats good"
by AJ6 April 8, 2018
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Abbreviation for "cashed bowl". Indicates that there is no more marijuana in the pipe, all that's left is ash.
Mike: "Damn dude, why'd you hand me a cb?"
Randy: "Well I got a hit..."

or

Randy: "That's a cb"
Mike: "Well load it again, dumbass, I'm not high yet"
by withstand November 4, 2005
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A member of the cockblock battalion, they construct hookup preventative systems.
You changed your mo from rn to cb did you? I thought you did some cb duty as a rn too.
by Solid Mantis October 25, 2016
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shortened version of cbf or cant be fucked which can be used in various situations. Many words are derived from cb's like cbser, cbseritis
ridic hot chick1: wanna have sex?
burnham: cb's.
by jaxon77 June 8, 2009
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chat language meaning 'chat back'
similar to tb (text back) and wb (write back)
'why the fuck you not cb last night biatch!'
'wot you talkin bout? cb'
by simon bishop June 26, 2006
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Joe: Dude why you always have your hand in your pants
Tom: I'm adjusting my CB's
by P-S-D January 6, 2010
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