Am I the only one whose testicles rage-clench whenever I hear somebody add "cha-cha-cha" to the Happy Birthday song? I've never even experienced this in real life, all I know is that at some point America decided the Happy Birthday song would be improved if one obnoxious asshole shouted "cha-cha-cha" between every line, and at some point after that I inadvertently watched two youtube videos where it happens. Why does it happen? When did it start? Why is it always just one ridiculously annoying person doing it?

And does anybody else hate this with a pure, unbridled hatred that burns hotter than ten thousand suns?