This sound is best understood as a generic heartbeat effect rather than a quote tied to one famous character or scene. Versions of heartbeat audio have circulated for years across editing apps, soundboards and short-form videos because the meaning is instantly clear without context. People use it to signal fear, attraction, panic or suspense in a few seconds. It remains popular because a repeating pulse fits easily under dialogue, reaction clips and horror-style pacing, especially in short edits where creators need tension fast.