A phrase sarcastically used to indicate one's disgust or indifference towards a tl;dr story.
Person A: (lengthy tale about how Person A tragically broke up with his/her mate the other day)

Person B: cool story bro
by a1b2c3d4e5 January 6, 2009
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An appropriate response to a story that went nowhere and/or was completely uninteresting.
"This one time me and my brother were eating sandwiches and he was like 'dude, I hate mustard' and I was like 'yeah.'"
"Cool story bro."
by Geneva H February 7, 2009
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when someone tells you a boring story you don't wanna hear
person 1 "I went to the shop last night"
person 2 " cool story bro"
by Princess barbie doll 101 February 6, 2018
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Not a cool story.
(And not necessarily towards your/a "Bro".)
Girl 1: I went the to mall today and...
Girl 2: Cool story bro.
by smmmg April 9, 2016
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A phrase used to express indifference or boredom to a long or boring conversation.

There are many different types of "cool story bro". There is:

1) cool story bro
2) cool story bro, you should write a book about it
3) cool story bro, in which chapter do you shut the f*ck up?

etc.
1) Chad: I ate an apple for breakfast

Angie: Cool story bro.

2) Hannah: And then I rinsed my teeth. And then, lo and behold, I saw a black mark. I thought: "Hmm, what can it be?" and hark! It was a cavity! So then, I --

Josie: Cool story bro, you should write a book about it.

3) Tad: boring and lengthy story about scientists growing a new type of capsicum

Beth: Cool story bro, in which chapter do you shut the f*ck up?
by NaziCookieMonster June 25, 2011
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A phrase used to react to a story, ect. that has little/nothing to do whith the curent subject.
*under a discussion about videogames*
Dude A:Hay guys i just started reading books, that shit is so cash!
Dude B: Cool story bro
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Something retards and trolls say, when they didn't like something they read, really want to argue but, just aren't smart enough to do so.

See also TL;DR
cool story bro is just more obnoxious forum chaff from the crap factory and anon daycare center, that is 4chan.
by Lig Na Baste August 14, 2009
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