There are two (main) types of liquor licenses here in Chi-Town; 1) the kind that allows you to buy in bulk and serve out of kegs through a tap or by the glass wine, and 2)the kind called a "packaged goods" license, where everything leaves in a brown bag (or plastic). This is why it was called "brown bagging it" (walking down the street and drinking from a bottle you just bought).

I've never done that!