Big Mouth is a Netflix animated comedy that premiered in 2017, created by Nick Kroll, Andrew Goldberg, Mark Levin and Jennifer Flackett. Nick Birch, voiced by Kroll, is one of its central characters, and his awkward, deadpan reactions are frequently clipped for soundboards and edits. This one second line spread in that context as a reusable reaction, used when someone wants to sound unbothered without sounding convinced. Its popularity comes from how often that exact social moment happens online, in chats, streams and short form video responses.