Very fun.
Just to put it blunt: it's one of the most brilliant, most stupid songs I've ever heard in my entire life. The happy vibe that the piano that I hear somewhere in the background puts out just adds to the fact of what kind of comedic value this piece of music is putting out. I enjoyed that fact that there are songs that are out there that still use a piano and you can actually hear it. Of course, this is me being a fellow piano musician.
Out of curiousity (I think I spelled that right), how long did it take you to compile that list of, not only swear words, but just plain insulting terms? Also, how many takes did you have to do before actually recording this all down to your terms of perfection? If only this song had a certain, real purpose to it; then I would've given it (probably) a perfect score.