Se me paró el corazón is a common Spanish expression for a moment of shock, and as a clip it circulates mainly as a short reaction sound rather than as a line tied to one famous scene. Spanish-speaking creators use it to punctuate surprises, crushes, scares and dramatic reveals, often in memes and short videos where a single spoken reaction says more than a caption. Its brevity keeps it reusable across formats, from gaming reactions to everyday comedy sketches, because the phrase is widely understood and its emotional meaning is immediate even for viewers who only recognise the tone.