The term was coined by Henry Maverick, but as Stephens points out:
Maverick said the bureaucratic style of writing reminded him of the turkeys who strutted around the yard making a lot of noise that ended in a pile of sputum on the ground. That sputum was the gobble-de-gook. Not the strut nor the song-- the spit and pus!
For more of Cheryl's wisdom, check out her terrific blog, Building Rapport. In particular, you'll see information about the Plain Language in Government Communications Act now pending in Congress. To heck with the bailout; urge your congressman to support that.