Just put it to the other-shoe test: If it were Teresa Heinz Kerry standing up on the dais telling the same jokes, the conservative commentariat would be buzzing for the rest of the year about what a tasteless skank she is.
"Lighten up?" How about cleaning up? The First Lady resorting to cheap horse masturbation jokes is not much better than Whoopi Goldberg trafficking in dumb puns on the Bush family name. Unlike many Beltway and Manhattan commentators, I do not think the Wonkette-ization of the White House is a good thing.
Of course, not all on the right agree with her. But considering that Malkin was a huge critic of Teresa Heinz Kerry's "tastelessness," I have to give her props for consistency here.