I really enjoy singing. In fact, when I was a tyke, I enjoyed singing so much that I would constantly throw out my voice. And even then, I would still keep singing. That said, singing with a hoarse voice is a disgrace to the word "singing," because it's not; It's more or less just playing around with a wrecked voice.
Being the comical genius that I am, I unofficially dubbed it "hoarse play," because not unlike actual horseplay, it's loud, rough, violent, and doesn't last very long before it stops.
In addition, the word "hoarse" can be interpreted as a synonym for being weak, which I am. And "play" because all I do is play video games. I am a weak individual that plays video games.
Or maybe when I joined the Brony fandom, I decided that any dumb pun that I came up with would be an infinitely better name than "Blood Addict Katsu." Erugh...