Anything that is percieved as "upscale" from a blue-collar point of view. 'Bougie' (pronounced boo'-she) is a hacked truncation of the word Bourgeoisie, which refers to the middle-class in Europe, but refers to a more affluent class level in the United States.
In the United States, which lacks strict social classes, Bourgeoisie is sometimes used to refer to those seen as being upper class.
You can sit there and drink your bougie-ass microbrewed beer, but I still prefer my ice cold Coors original.
Did ya see Luthur just roll up in his bougie new BMW?
You can eat your bougie $25.99 salad from Central Market for lunch, but I'm hangin' with Mikky D's!