I always envision the Woo being the brainchild of the creator of other annoying things such as the wave, Justin Bieber, Sharknado, silly string, Pokemon Go and small legos that you step on in the middle of the night.
I've done more research. The person that put the Woo in Rocky Top also invented...autotune pop songs, hemhorroids, wine coolers, vape pens worn around the neck and Gatlinburg.
Along with YouTube ads, email chain letters, Windows 10 and Ruby Falls.