As far as I can tell? No, but I just did a search of the onimbus for some keywords. The mental image feels very Adamsish though, doesn’t it? I may have unconsciously plagiarized it from somewhere. Props to you if you can find the source. Maybe it’s a Pratchettian quote? Or Giamanic?
If they shut down taco bell it becomes the flag of the Fascist Neo-Confederacy of Kentucky Fried Chicken.