Belated Thought About the Obama Selfie Incident

At the Mandela memorial service, Obama took a selfie with the attractive Danish prime minister Helle Thorning-Schmidt. It's disputed whether Michelle was angry (but note that the previous link does not mention her changing places with Obama who thereby was no longer sitting next to the PM).

I am no fan of Michelle Obama:

Michelle Obama’s scowl is so ingrained that, figuratively and maybe literally, it is her expression in repose.

That said, one wonders if perhaps she has reason to scowl. At first blush it seems unthinkable that Barry would fool around like FDR, Ike, JFK, LBJ and WJC did. Why? (Another possibility is that Barry has reason to fool around.)