I always recommend watching the episodes before reading this, sometimes it can contain spoilers. This episode is based on a true story. I won't say who, but I had to clarify with someone that they could use wheelchair accessible restrooms without getting a ticket. They thought they were reserved like the parking spaces.
When I was at the movies not too long ago I saw a guy with a green t-shirt with a clover that said "Ireland". I misread it and thought is said Iceland and had to do a double take. That's the story behind Narc's t-shirt. Most of Narc's t-shirts are available in the store if you like them: http://www.zazzle.com/apt 404
Oh, and the song used in this episode is "The Obvious Child" by Paul Simon from the album The Rhythm of the Saints.