On my way to work today, I saw a couple of folks on a tandem, the person on the back (stoker?) had a big orange/black print on the back of their black jersey that read "BLIND" along with white helmet. There was text under the "BLIND" but I was passing in my car and a) didn't want to get too close b) didn't want to slow down too much.

My first thought was "They must have incredible communication!
2nd was "What a strange sensation, to bike blind!"

Has anyone else seen anything like this? Think it was legitimate, or just a joke jersey of some sort (in sortof bad taste?)