"Bike" by Pink Floyd...it was stuck in there so bad I started singing bits of it in the silences in conversations. So you'd get something like:
Roommate: "Well it's just that her characters are so close to the comic, it makes me wonder if she didn't swipe them."
Me: "I guess you'll just have to talk to her about it."
(after a bit of silence)
Me: "I know a mouse who hasn't got a house and I don't know why I call him Gerald...he's getting rather old but he's a good mouse."
The expression of confusion on her face was worth it.