How'd I miss Palin vs Letterman

I guess I'm working too hard, but I completely missed this important news event and now I feel so out of touch. It seems Letterman made a joke about a Palin daughter, without specifying which one. And then mama bear Palin and papa bear Palin got on their respective Facebook pages and smacked Letterman down for making lewd suggestions about their underage daughter, completely forgetting, it seems, that they actually have another daughter who, in fact, is admittedly sexually promiscuous -- and of age. And then Letterman apologizes, sort of, clarifying that his intended target was not the underage girl. But we all knew that, didn't we? And so did mama and papa Palin. But they saw an opportunity for some righteous indignation, and jumped at the chance, deliberately misunderstanding to their advantage. But the whole thing is clear as glass to anyone who cares to look.

So now I'm all up to date on important stuff. Let's see now, was there something going on in Iran?