I work weekends at a shop. I do my best to not let my back pain and disdain for uptight, lumpy renditions of the intro to "sweet child o mine" turn me into one of these storied horrible shop operators. That said, we're a ton more relaxed when people under 20 come in with their parents and talk in an adult way with us and have us pull down the pro stuff rather than come in with their bandmates all acting like cockey frat boys and shout across the room "can I get this down and do you have a 'patch' and a pick?".