Does Obama have other children? Well, none to speak of

President Obama’s got sons? - In the Loop - The Washington Post:
What do you make of this, asks the Post:

President Obama, speaking last night in Chicago at a fundraiser at a private home, unloaded this bombshell:

Obama, according to the White House transcript, talked about “The first bill I signed — a bill that said that we’re going to have equal pay for equal work because I want my daughters treated the same way as my sons.”

Sons? What sons? How many? Where? Names? Do the girls know? (More importantly, does Michelle?)

Obama has sons? Who knew?

Reminds me of the old joke of a man boasting about his two kids with his wife standing nearby. He's asked whether he has any other kids. Flustered for a moment, he turns red in the face and leans to his interlocutor and replies, "Well, none to speak of."