This sentence is from the theme song of an animated series called Kung Fu Panda: Legends of Awesomeness. You can find it on YouTube.
However, this Urban Dictionary entry might fit in the lyrics:
"Something something" means that whatever the person is talking about isn't worth clarifying.
I also found a TV special of Family Guy called "Something, Something, Something, Dark Side" which is a parody of Star Wars. But I don't think that the songwriter wanted listeners to think that the series is made up of repeated ideas and things not worth mentioning. I can't think of another meaning, though.