Sadly, it's decidedly non-forgettable - and with today's news about escalation in Iraq, it's more up-to-date and topical than ever:

Waist deep in the Big Muddy
And the big fool says to push on.
Waist deep in the Big Muddy
And the big fool says to push on.
Waist deep! Neck deep! Soon even a
Tall man'll be over his head, we're
Waist deep in the Big Muddy!
And the big fool says to push on!

And here is a YouTube clip of John Fogerty's Deja Vu All Over Again, with its reference to this song to Pete Seeger's song.