James Fallows:

[Obama] also appeared to refer to the language of Austria as “Austrian,” thus: “I don’t know how you say it in Austrian, but we call it wheeling-dealing.” If this had been GW Bush, it would have been taken as an obvious gaffe, as in his calling the residents of Greece “Grecians.” Here you can’t be sure whether it’s a plain error or a knowing casualism, as in saying that Australians speak “Australian” — eg, in the ad that says, “Foster’s: Australian for ‘beer.’