I heard this talked about on John Boy and Billy the other day.

Here is the link to the song I think.

There is 2 versions (I believe)

http://rickdavismusic.com/cheneysgotagun.mp3

http://www.bobrivers.com/audiovault/downloads/files/Bob%20Rivers%20-%20Cheney's%20Got%20a%20Gun.mp3