I've both heard this in everyday conversations and seen it in text on the internet. What I mean is that a person will legitimately use the phrase in a conversation, and then immediately another person will repeat the phrase as if mockingly or like its some sort of meme. Sometimes its repeated multiple times like an echo. Its very bizarre (especially without context), as if the NPCs are becoming more and more like robot's. I assume this phrase must have been popularized by some Hollywood production recently.