I also know the one based on the Beetles "Yesterday"

Leprosey
I'm just half the man I used to be
little pieces falling off of me
Oh I believe it's leprosey
And I believe it's killing me

Kiss me quick
I'm about to lose my upper lip
I don't even have a nose to pick
Oh I believe it's Leprosey
And I believe it's killing me.

There is more to it but that is all I can remember.