Big Red is a Texas thing. In central Texas, when you order your bbq from Smitty's, Kreuz, Louie Meuller's, or Southside, etc., they will look at you funny if you don't order a Big Red to wash it all down. I know of one old Bohemian in Taylor, TX that will mix half Big Red and half Miller Lite. It tastes awful, but he likes it.
I just spent a little over a week in Rio and got home yesterday morning craving some bbq. I really needed a bbq fix so I drove to Southside Market in Elgin and had some Elgin hot gut, bbq mutton, and bbq chicken along with a refreshing bottle of Big Red. Yummy. Life is all better now.