The episode: “Hercules Unchained,” ep. 408
The riff: Sung by Joel, Tom and Crow simultaneously as Hercules and co. rumble by on a dirt road in their Oregon Trail-looking Conestoga Wagon.
The explanation: The tune and the lyrics are actually from a series of 1970s Budweiser commercials that first featured the famous Budweiser Clydesdales. As mentioned in the rest of the tune, “When you say Bud, you’ve said it all.”
Novelty factor: I’m a little surprised to not know this one, given my general beer-related knowledge.