I have to write this down before I forget.. the next time you're singing the sax/trumpet part at the end, put some words into it. Here's what I came up with:
low part: "Banana nut... banana nut bread... banana nut bread... it is goooood."
high part: "Banana nut... banana nut bread is good... banana nut bread, it is very goood!"
Yeah, I do know how ridiculous this is, but if you get your friends to sing at the same time, this really can be pretty entertaining.
Saw Ben Folds play this live once. One audience member was drunk and yelled out something like "I love you Ben!" during the song...Without missing a beat he changed the lyric to "you've been drinking a lot today!" it was hilarious!