be cool exclamation2 •Used to implore someone to not reveal illegal or improper activity.That's why I scoured our newsroom for red yarn, watched an episode of "The Bachelorette" during work (shhh, be cool) and tacked pictures of reality TV stars alongside a scrap of notebook paper... — 2016 •Used to remonstrate someone for being (inadvertently) awkward, nerdy, geeky, or embarrassing.
