Here's as many as I can recall off the top of my so-called head:

(To the tune of "My Bonnie"):

The bluefish lie dead in the ocean
The codfish lie dead in the sea
The all died of water pollution
Caused by the oil company!

Don't swim! Don't swim!
Remember the bluefish and cod (and cod)
It's not our sea --
Texaco leased it from God!

And howzabout this one?
(To the tune of "Anchors Aweigh"):

Our kid's away, thank God
Our kid's away
We sent him off to camp
At thirty bucks a day(-ay-ay-ay)

Though it's a lot to pay
We'll raise no fuss
If we complain, then they might
Send him back
Might send him back
to us!

And finally
(to the tune of "Off We Go Into The Wild Blue Yonder"
[or whatever that song's actually called!]):

Off we go into the bargain section
Running wild over the place
There's a clerk coming in our direction
Onward girls! Stomp on his face!

There's a dress that we can all fight over
Grab it, girls! Do not delay!
We'll pull till it's
All torn to bits
Nothing can stop us shoppers today!