The sound draws on Detective Conan, the long-running manga and anime following Conan Edogawa, who uses a tranquiliser wristwatch created by Professor Agasa to sedate Kogoro Mori and solve cases through him. Korean online communities shortened that famous setup into a reusable reaction clip associated with Hyeroro, sharing it on soundboards for sleep and fainting jokes. It remains popular because even viewers who have not seen the series understand the cause and effect in seconds, making the reference work as a standalone gag.