Having at least ten of your favorite cues/BGMs on your player is a given...
Some based on personal experience:
Finding any broken antenna on the ground and keeping it as a Barker mic. (I've done it several times...)
You use a sound effect for nearly everything... (like watching a sports game after a bad play or humming the Range Game cue in an elevator)
You make the time it comes on a part of your life. (i.e. Everytime someone mentions 10:00 on a weekday, I think about Price)
You have an index card shaped like a price tage and a card pocket to put it in...
Anytime somebody says "Come on Down" in any fashion...
I have this: I feel like I overslept after 10:00 and get up immediately no matter what day it is...
You call your trips to the show a pilgrimage...
Anytime someone has a last name familiar to the show (Barker, Greco, Pennington...) you think of the show...
When you center
anything around an airing of the show...
If you tape thousands of episodes (and eventually put them on YouTube)...
If you're a member of this site.