I was watching TV chef Alton Brown's show on making jerkey when I saw something I hadn't seen before...
He was gathering ingredients out of his cupboard, and one of them was worcestershire sauce. It was, obviously Heinz brand, as you could see the top and shoulders of the stylized Keystone that they use.
Instead of saying Heinz, though, it said... Kerry.
It was filmed well after the November 2004 election, so I'm leaning towards joke...