Once I was on a Southwest flight from AUS-DAL that continued on to LBB. A middle aged gentleman across the aisle ordered a Bloody Mary (vodka and tomato juice) and a beer. He proceeded to mix the two together and drank it.
When I got off the plane in DAL, I mentioned it to my dad and said how gross I thought it was and he told me that it is actually quite popular in West Texas. He said the people who like it say it tastes like carbonated tomato juice. Ugh.