Renosteinke; thanks for starting my day off with a hearty laugh.
A few years ago we had a manufacturer try to sell us something in the heart of the downtown Chicago market and the question was asked of him about wiring it up...he explained exactly how to install their product (that would only work with NM cable) in great detail.
After he got all finished and saw a sea of stunned faces, someone asked him exactly what you asked.
"What's Romex???"
I guess he figured that Chicago would happily change their Codes so that he could collect his commissions. He was REALLY depressed when he found out that most of the Chicago suburbs had adopted the Chicago requirements and that he had to go 2 counties away before there was any hope of selling his wares.
Thanks again...I really needed that smile today.