The clip comes from a historical BBC sound effects collection dated to 1967 and later reprocessed for modern sound libraries under the cartoon balloons comedy category. It was designed not as a realistic field recording but as a staged effect where the pop is exaggerated for radio, television and animation timing. As those archive effects moved online into soundboards and editing libraries, this burst became a reusable shortcut for a big comic pop, shared by creators who need an instantly readable balloon explosion without recording one themselves.