Now this furnishes a great reason for reading the Pit – where else would one get the etymology of such terms?!? 
For a while, ‘bout six months ago, we’d get phone calls (at home) about every other night, same people, trying for Pizza Express. Always the same folks, who just Didn’t Freakin’ Get It. Apparently, our phone number is one digit differeint from that of Pizza Express.
I’ve taken to answering the phone “Pizza Express, how may I help you?” Confuses the hell out of some of my friends and is so much evil fun.