There's a story in Ray Coleman's biography of Eric Clapton that goes something like this: One evening in the 1970s, when Clapton was on tour, and piss-drunk, he asked his chief roadie what city he was in. "Cleveland", the roadie replied. Clapton went on stage, and dutifully shouted the standard clichéd, "GOOD EVENING, CLEVELAND!!!!!!!!" opening. Dead silence. He was in Detroit, but his roadie had decided to play a little joke on his employer.

Apparently, it isn't that hard to do, as John Kerry just made the same mistake, but compounded it, by confusing Ohio and Michigan's collegiate football rivals.