What does it mean when people say cool story bro?

Answer 1

What it means when people say "cool story bro" is that whatever you have been talking about is interesting. Some people might say "cool story bro" in order to close that story and change the subject.

Answer 2

It is a sarcastic or dismissive response used to show that someone's story or statement is uninteresting or unimpressive. It implies that the speaker does not care about what was said.