THX became famous for the booming theatre intro played before films, designed to show off cinema sound systems with a single rising chord that fills the room. Lucas Urps is a long running joke version of that moment, swapping the prestige of the original for burps and keeping the same sense of scale. It spread through soundboards and meme edits as a shorthand for fake epic, where creators borrow the language of a big premiere to introduce clips, games and reveals that are deliberately small, cheap or absurd.