Neil Young's original song is entitled, "Fuckin' Up", which, for obvious reasons, makes it a good candidate for a song parody about George Bush. Here's a link to the original song:
http://www.youtube.com/...
And here's the parody:
Fuckin' Up
Mindless drifter on the White House lawn
Talks just like a dim moron
Where did he come from? Why was he sent?
Oh my God, he’s the president!
Why does he keep fuckin' up?
He took a stroll to Capitol Hill
Comatose but walking still
Wouldn’t be this way if we had Gore
Jesus Christ, he’s startin’ a war!
Why does he keep fuckin' up?
He tells lies, demands our trust
He outs our spies, then spies on us
Broken promise, Katrina mess
Brings us only debt and death
Why does he keep fuckin' up?