This is a term used by people that could care less about what you’re saying to them. This term can also be expressed the opposite way too. If they just say “cool” and nothing else after that, they don’t give a shit. This is also a sign that they’re boring and you should stoptexting them and just leave them on read if they’re saying that shit.
Me: “So I once saw an eagle come down and grab a child from their stroller.”