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1.
CSB
Cool story, bro. When someone tells you a boring story that really needn't be shared. Sarcastically replied.
Fred: "Yesterday I got a cut, so I put a band-aid on it."
Nick: "CSB."
by JewForensicsGirl May 08, 2010
 
2.
CSB
COOL STORY BRO

When someone tells a personal story (usually sad, depressive), in a chan, and you don't give a shit.
It sucks to be you; CSB
by Tutzz July 11, 2009
 
3.
csb
"Cool Story Bro." By douchebags for douchebags.
Douche 1: Bro, i was at the bar last night pickin up babes and i saw Denzel Washington!

Douche 2: Csb.

Douche 1: Wow...
by nikehitops September 24, 2011
 
4.
Certified Slow Burner. A blunt that burns for days. Not a loose skeet blunt but one that makes it around and around.
noob: man this blunt is way better than anything i've ever seen.

certified stoner: yea man if you're not smoking a C.S.B., then you need to step your game up.
by uc314 September 26, 2010
 
5.
From Tourette's Guy;

Chicken Shit Bull Shit:

a phrase signifying an unworthy thing or task
"I don't have time for this chicken shit bull shit CSBS."
-Tourette's Guy
by brumm09 April 15, 2009
 
6.
CSB
When someone tells an extremely lame or pointless story, respond with "CSB." It stands for "cool story, bro."
"One time I put in my contacts and I forgot about them and then I put on my glasses and I was like "WOAH!""
"That was a major CSB dude"
by shadynasty October 03, 2013
 
7.
Gay Gay Gay
d00d, I'm so fucking gay. i think I'm a CSBS
by $n!pi August 14, 2003