The version I got (and passed on and on and on) is:

The George W Fight Song!

If you're happy and you know it, bomb Iraq
(clap clap)
If you're happy and you know it, bomb Iraq
(clap clap)
If you're happy and you know it, and you really want to show it
If you're happy and you know it, bomb Iraq

If your equities are falling, bomb Iraq
If your equities are falling, bomb Iraq
If your equities are falling, and your losses are appalling
If your equities are falling, bomb Iraq

If the euro keeps on climbing, bomb Iraq
If the euro keeps on climbing, bomb Iraq
If the euro keeps on climbing, put your trust in W's timing
If the euro keeps on climbing, bomb Iraq

If the GDP is shrinking, bomb Iraq
If the GDP is shrinking, bomb Iraq
If the GDP is shrinking, and W's back to drinking
If the GDP is shrinking, bomb Iraq

If my polls are falling, bomb Iraq
If my polls are falling, bomb Iraq
If my polls are falling, and the Congress is a-stalling
If my polls are falling, bomb Iraq

If the GOP is hurtin', bomb Iraq
If the GOP is hurtin', bomb Iraq
If the GOP is hurtin', and November looks uncertain
If the GOP is hurtin', bomb Iraq

If the talk has turned to Harken, bomb Iraq
If the talk has turned to Harken, bomb Iraq
If the talk has turned to Harken, and that Krugman-dawg is barkin'
If the talk has turned to Harken, bomb Iraq

Are they checking Halliburton? bomb Iraq
Are they checking Halliburton? bomb Iraq
If they're checking Halliburton, and for Cheney jail looks certain
If they're checking Halliburton, bomb Iraq

If your brother is a turkey, bomb Iraq
If your brother is a turkey, bomb Iraq
If your brother is a turkey, and Florida's gone bazerk-y
If your brother is a turkey, bomb Iraq

If the pundits call you "moron," bomb Iraq
If the pundits call you "moron," bomb Iraq
If the pundits call you "moron," then it's time to get your war on
If the pundits call you "moron," bomb Iraq

If Noelle gets caught with crack, then bomb Iraq
If Noelle gets caught with crack, then bomb Iraq
If Noelle gets caught with crack, and the twins drop booze for smack
If Noelle gets caught with crack, then bomb Iraq

To get drilling in the Arctic, bomb Iraq
To get drilling in the Arctic, bomb Iraq
You can run us out of oil, with the Mid-East all aboil
To get drilling in the Arctic, bomb Iraq

....Add your own verses!