A response to any of the comments made by Junaid Yasin, a brown senior at Parkway West High School because everything he says has completely no relevance to the current conversation. Cool Story Bro is also known as the "ultimate shutdown".
by coolstorybro123456 February 3, 2011
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A slang you say when someone is talking about shit you don't care about, it is unappealing to you and you feel like you are going to split into a freaking coma.

You tell the faggot in a sarcastic manner, "Cool Story Bro".
Hobo: I ORDERED 5KG OF CRACK FROM PIZZA HUT!
Troll: Cool Story Bro.
by SaviourZealot October 6, 2011
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A catchphrase used when a person says something complETEly unrelated to the topic you were just talking about.
John: "So I just got Modern Warfare 2 yesterday."

Dave: "Yeah? Do you like it?"

John: "Holy crap, it's the sickest game ever!"

Paul: (butting in) "Did you know dogs can lick their private parts?"

John & Dave, simultaneously: "Cool story, bro."
by G0dS4v3T3hCZ4RX February 3, 2010
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A phrase used toward someone if you don't really care what they are saying, or your just joking around trying to annoy them.
by your a yickkkkkk July 22, 2013
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tell your cool story again, bro.
cool story bro - don't give a shit about your story.
tell it again - still probably won't give a shit about it.
Jimmy - HEY, I GOT AN A ON MY MATH TEST TODAY.

Nick - Cool story, bro! Tell it again!
by IDGAFBRO April 14, 2011
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A dickish/sarcastic way of telling someone, after they told you something such as a story, a time they had in there life, etc.etc.etc.
Sleezy: Some guy moved into my neighborhood and they call him Snoop.
Meezy: "Cool Story Bro, Tell It Again."
by ERIKGYOUKNOWHOIBE September 29, 2011
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