Believe it or not, I've been looking for this song for years:
I must have first heard it at a Boy Scout jamboree (circa 1976), and it has been rattling around my head (with incomplete lyrics) ever since. It's possible that I actually heard Oscar Brand perform it too, but at the time I didn't pay much attention.
I found this, of all places, at Improbable Research. Maybe Marc A. sings this song when he thinks no one can hear him too. ;-)