I actually saw someone wearing an "I'm with Stupid -->" T-shirt today. Never saw anyone wearing one of those outside of the funny books. I also saw a man screaming at his imaginary girlfriend, and a nappy-haired gentleman sitting on a fire hydrant, wearing a Hawaiian Shirt and Panama hat, smoking a cuban cigar, but I really don't feel they command as much attention.
Oh, and by the way, XML is your friend.