The phrase comes from Indonesian, where sakitnya hatiku ni is an informal way of saying this heart of mine hurts. As a short isolated voice clip lasting just over four seconds, it has circulated as a shareable reaction sound rather than as part of a longer song or scene that most users can identify. Its appeal online lies in the melodramatic delivery, which Indonesian and Malaysian audiences use for joking complaints about love, rejection and disappointment, and which other viewers recognise from tone alone.