(CNN) -- President Barack Obama has made it clear to the public that he's quit smoking. But Monday he may have hinted at the real reason why: he's afraid of his wife.
The moment of candor followed a roundtable discussion during a conversation caught on camera at the United Nations General Assembly between Obama and Maina Kiai, the U.N. Special Rapporteur for rights to freedom of peaceful assembly.
Caught off-mic, Obama said to Kiai: "I hope you've quit smoking."
To that Kiai replies: "Sometimes."
Obama then says "no, no, no I haven't" followed by a word that's inaudible and then: "in six years. That's 'cause I'm scared of my wife."
--CNN's Virginia Nicolaidis contributed to this report.