....your pricing inventory at work, with ventilation fans going, and the radio barely even on, an you don't so much hear, as feel a Rush song come on, and turn it up to Red Sector A playing
...you and your co-worker start spontaneously 'singing' YYZ in the lunchroom, to the incredulity of everyone coming in
...your friends(who aren't Rush fans), know a lot about them simply from being around you