On NPR's Political Junkie : Mastering Political Put-Downs.
A caller called in to share Margaret Thatcher's put-down: At a dinner party, Margaret Thatcher is asked "What would you like to have?" She says, "Steak". The server then asks, "What about the vegetables?" She retorts, "They will have steak too!".
Another one: At a rally featuring Lincoln, one of the less pleased audience member comes up to him and says, "I can't believe I paid a dime to see such an ugly person." Lincoln's reply: "I am sorry for your loss. But I had that privilege for free!"