What's on your mug?

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

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

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

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

4chan saying commonly used when sayer is listening to someone talk to him and doesn't really care

1. so this one time we were sledding down a hill and we totally got broke 2. Cool Story Bro

By Biohazard357