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The abbreviated way to say "cool story bro", often used to blatantly make the disgust clear with little to no sarcastic intentions.
A: Did you see the Raiders dominate the Chargers last night? And look at my new Jacoby jersey and new hat and and and and and....

B:CSB.
CSB by JoMamma1241 December 8, 2010
it means cool story bro
created by mariah, kaytlyn and noa
teacher: do your homework!
you: good to know miss/mr CSB!
CSB by mkn2421 July 17, 2011
CSB or cool story bro originally cropped up in the south west of England.
The original cool story bro comment followed either a genuine cool story or as a satirical way of telling your friend to fuck off.
After a Conservative MP used the saying at a debate, it was deemed 'uncool' by the youth. Thus the abbreviation 'CSB' was born
Friend 1: "I fucked her so fucking hard her fucking fanny came off"
Friend 2 "CSB"
CSB by WiltshireFuckBoi August 31, 2016
if someone sends you this with streaks then they are saying they can't snap back to you.
Josh: streaks ,csb
Emma: ah shoot I wanted to speak to you
csb by merlin_the_wizard July 9, 2020
Man 1: I went to the mall with my girlfriend

Man2: Csb but... did I ask?
CSB by Grackie De February 3, 2021
Stands for Corinna’s Step Bros as Adin Ross chat initiated They where together

BUT ITS STILL GANG SHIT SSB NO LAME SHIT🖤‼️
Bro imma cop some CSB merch
CSB by Trigga🎸 February 23, 2021
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