Flip-flopping on himself
Not only can John Kerry flip-flop on issues, he can even flip-flop on himself!

Kerry, Speech to the International Association of Fire Fighters, Aug. 19, 2004:

Of course, the President keeps telling people he would never question my service to our country. Instead, he watches as a Republican-funded attack group does just that. Well, if he wants to have a debate about our service in Vietnam, here is my answer: "Bring it on."

I will not have my commitment to defend this country questioned by those who refused to serve when they could have and by those who have misled the nation into Iraq.