“I’m very analytical, I’m very precise. I make charts of songs that are good candidates, good targets, so to speak. Then I try to come up with ideas for parodies. And 99% of those ideas are horrible. But every once in awhile I come up with an idea and I think, ‘Mmmm. That just might work.’ And if the next morning it still seems like a good idea, then I try to flesh [it] out.”