I am also greatly amused (and/or bemused) to realize that these are the only two humorous songs nominated in those categories. As someone whose first album was titled The Grim Roper, I'm starting to think that I may have transcended that reputation.
Either that, or I have to take Gretchen seriously when she says, "If you're not writing ose because you're too happy, I can fix that." :)
(Fortunately, she was only kidding...)