This sound is associated with train horn prank culture, where oversized horn setups are used in vehicles or edits to create an exaggerated scare. The provided file metadata credits HornBlasters and labels the clip as Shockers Horn, which suggests a branded horn recording rather than a scene from a film or show. Sounds like this spread through short prank videos, compilations, and reaction edits because the blast is instantly recognizable and delivers a fast surprise without needing any dialogue or setup.