Nelson Mandela’s memorial ceremony was held in South Africa this week, and leaders and dignitaries from all over the world made sure to descend on Johannesburg to pay their respects to the civil rights icon. Among those at the memorial service for the first black South African president was Barack Obama, the first black American president (sorry Bubba, you have to relinquish that title). But of course, anyone whose been to any type of memorial ceremony — not least one the size and scale of the Mandela fête — knows that things can get kind of dull. Alas, world leaders are as human as anyone else (though sometimes less so) and they get bored like the rest of us. Hence, President Obama took some time out from the long, drawn-out mourning/celebration to clown around with British PM David Cameron and Danish PM Helle Thorning-Schmidt in a manner that exemplifies the contemporary narcissistic age: they took a group selfie.