Sitting in the tank

The linked article takes a look at political shark jumps. I haven't heard the phrase in quite a few months. Someone suggested that for politicians the decline should be a marked by a scream or a ride in a tank with a helmet that doesn't quite fit. These are both mentioned as political jumps. I guess you know the phrase has made it into the public consciousness, when it makes the Pittsburgh Trib, but they still feel they have to explain it.