User blog comment:Touchinos/“Last Call” Discussion/@comment-74.132.82.188-20191206194456/@comment-108.36.76.116-20191206234004

I was assuming Castiel was referring to AU Bobby, unless he was bluffing, which would also be a Dean move, Personally, I don't think it was a bluff. Castiel: fool me once, shame on you, fool me twice--NOT this time.

Your point about Dukes is relevent, as there were a couple HUGE "Dukes of Hazzard" references, namely the Waylin Jennings song that was used as a theme song, sung by a character nameed Lee, same name as the Duke boys car. Given the Roadhouse and Swazey references that followed the use of the Dukes/ Dux alias, I'm inclinded to go with them paying tribute to Dean's love of macho movies. Either way they spell it, I'd say it's a reference to both.