I remember at the last Jonathan Coulton/Paul and Storm show, where I know the performers were distracted by the guy in the graphic equalizer shirt. And I think the other shirt that threw them was the pong shirt. Or maybe it was the Wi-Fi detector shirt.
Whichever it was, they were flipping out at the dancing lights being worn by certain members of the audience.
Now, I give a warning to them and to all the other pop culture/geekcentric musicians: ThinkGeek now has an electronic drum kit shirt.
People, use this shirt responsibly. I’ve been to enough shows to know that people have trouble clapping in rhythm, much less providing improvisational percussive accompaniment.