The sound comes from the Baldi's Basics Character Calamity series, a series based on Baldi's Basics, the 2018 indie horror parody known for its deliberately crude school setting and sudden character encounters. The Doctor became one of the figures fans clipped for short scare edits, and the jumpscare audio spread through game videos and soundboards alongside similar hits like the FNAF Jumpscare Scream. It stays popular because three seconds is enough to puncture any quiet scene, making it a reusable punchline for horror fans without needing the full context of the original encounter.