Under the "two side to every coin" category, I'm probably the above guy, at least in the eyes of my LBS people. I occasionally go in asking for things like 15mm crank bolts, and the automatic assumption is that because they don't know what I'm talking about, I must not either. When they ask me to show it to them on a display bike, I can't, because the display bikes don't have it. I fight off the near-overwhelming urge to rant on about the bike races I was winning when they were still in diapers, and wander out - no doubt looking confused, if only because I can't remember the exact day I turned into a grumpy old man.