Bull In The Heather was in fact the name of a race horse; Bob Nastovich from Pavement is a big horse racing fan, and apparently he gave Kim and Thurston a bumper sticker with the horse's name on it. I don't think the song is actually about the horse though; it seems more like they're either using betting on horses as an obtuse sex/prostitution metaphor or they just thought it'd make a cool song title and decided to work it into an otherwise unrelated set of lyrics.
Bull In The Heather was in fact the name of a race horse; Bob Nastovich from Pavement is a big horse racing fan, and apparently he gave Kim and Thurston a bumper sticker with the horse's name on it. I don't think the song is actually about the horse though; it seems more like they're either using betting on horses as an obtuse sex/prostitution metaphor or they just thought it'd make a cool song title and decided to work it into an otherwise unrelated set of lyrics.