We've known for a while that Lindsey Graham and John McCain are something of political soul mates, as well as Senate colleagues. But a one-liner from Graham a little while ago makes us wonder (not too seriously, or deeply) whether he harbors secret ambitions.

Graham and Joe Lieberman are traveling with McCain on his two-country tour of Latin America, but this morning were shunted to the press boat (think of kids and the small table at Thanksgiving) for a tour by the entourage of the Port of Cartagena. McCain was in another vessel -- a faster, drug-interdiction speedboat called the Midnight Express (which for the moment could have been called the Straight Talk at Midnight Express).

The press boat chugged alongside McCain's boat for about 10 minutes as the presidential candidate and his wife, Cindy McCain, were briefed by port officials. Then both boats cruised out to open water, where they separated a bit. Graham, hopefully out of earshot of the Secret Service detail, pointed across the waves to McCain's craft and said, "Sink that boat!"