VIDEO: Obama Explains How That Lipstick Got On His Collar : The Two-Way An "auntie" left a very visible mark during a reception marking Asian American and Pacific Islander Heritage Month the president joked Tuesday. "I do not want to be in trouble with Michelle," he added. "That's why I'm calling you out."

VIDEO: Obama Explains How That Lipstick Got On His Collar

I can explain, the president said Tuesday. Brendan Smialowski /AFP/Getty Images hide caption

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Brendan Smialowski /AFP/Getty Images

I can explain, the president said Tuesday.

Brendan Smialowski /AFP/Getty Images

It was an "auntie" that left that lipstick mark on his collar, President Obama explained Tuesday evening at the start of a White House event marking Asian American and Pacific Islander Heritage Month.

"I do not want to be in trouble with Michelle," he joked. And to the anonymous off-camera auntie of one attendee, he added: "That's why I'm calling you out." The White House has a 6+ minutes long video of his remarks. His explanation comes in the first minute. CBS News has a shorter version focusing on the lipstick comments here.

According to the president, the lipstick was a very visible sign of the warmth he was greeted with at the reception.

White House YouTube