What the Hills Y’all: Adventures of a Texas girl living in San Francisco   San Francisco has this thing about bags- they hate them. In fact, they hate them so much that they’ve banned the paper or plastic kind and request demand that you bring your own, preferably made out of cotton or otherwise environmentally friendly material. If you don’t, you will be charged $.10 with a side of shame. This presents a problem for the slightly forgetful me. In Texas, people give bags out like they are candy. Stores will double bag for heavy items, and even attach an unused one at the grocery store to fulfill their stuff-20-bags-a-minute…