A declaration that one is not interested in the topic at hand but that one does not have the proper IQ to come up with a more interesting topic.
Amelia: My grandfather died

Zeus: Cool story bro
by Rihanyce May 23, 2010

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a troll's last resort, often used when the troll has no other defense to use
i like horror movies. no they suck. your movies suck. my movies kick ass. and my movies kick ass too. cool story bro
by chazm00 May 08, 2010

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An appropriate response to a story that is not believable without proof and no proof was provided.

Somewhat like Pics or it didn't happen.
Person A: I just got 15 headshots in a row when spraying with an M249 in Counter Strike Source without hacks!
Person B: Got a replay for this?
Person A: No, but I swear it happened!
Person B: cool story bro.
by gd1 December 01, 2009

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Soft and offensive. Just like you.

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meaning

we don't really care, please shutup.

originated at south sydney high school from a certain matthew holiday.

Unless you are him or italian, don't even try to claim it.
cool story bro
by yehmancoolstory December 05, 2010

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Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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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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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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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 June 17, 2016

The Urban Dictionary Mug

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt