My process for the parodies is that I get an idea for a song and then get approval from the artist and then go in and record it and probably try to get it out as soon as possible.
My own personal tastes don't really have an effect on whether song is a parody target or not. But having said that, I try to pick songs that I actually like because I realize that I have to live with these songs for a long time, from when I'm working on them in the studio to possibly playing them onstage for the rest of my life. So I try not to pick songs that I know would drive me crazy.
It's hard to really articulate what the parameters are that make one song parody-able and another song not, but if I can come up with a good enough idea for it, I go for it, and if not, then I have to move on.
In fact, when I come up with an idea for a parody I try to resist the urge to Google the idea to see if someone has done it already because the answer is almost always, "Yes, of course they have, they've thought of it!"
I think I'm equally as abusive as the editors normally are for the "Letters and Tomatoes" column, which is the fan mail part of MAD Magazine and an ongoing feature.
Many years ago I found out something about hamburgers that really grossed me out. You may not know this, so I hope I don’t make you sick, but it turns out hamburgers are actually made out of dead cows. I am not making this up. Needless to say, as soon as I discovered that, I gave up meat entirely.