Board Thread:Speculation House/@comment-14138255-20140801004849/@comment-11188061-20140805003553

Actually that phrase originated from as early as the first few RWBY fan fictions; if I'm not wrong by knives4cash when he wrote his massive collection of RWBY one shots. Obviously we can't know from when or where the term grew popular enough that RT would notice, but it made its way into the canon storyline just like Yang's puns, so.