That is the name of the song that is played whenever the Budweiser Clydesale horses are out on the march because Bud styles itself the King of Beers. Personally, I think the monarchy has been deposed but that's another matter.
You find these mammoths at many major events. I'm sure they will be in the St. Patrick;s Day parade next weekend. The team is a fixture at opening day of the baseball season, not far away, where they trot around the dirt track that surrounds the playing field. Be assured that the product they represent will be for sale everywhere you look.