President Barack Obama explains the lipstick on his collar after being kissed by an attendee before an event in the East Room of the White House May 28, 2013 in Washington, DC. Obama attend the event to celebrate Asian American and Pacific Islander Heritage Month. (Photo: Getty Images/BRENDAN SMIALOWSKI)
A smudge of lipstick could be seen on President Barack Obama's collar as he spoke at a White House event Tuesday evening marking the contributions Asian-Americans and Pacific Islanders have made to the U.S.
Obama was more than ready to explain where the lipstick came from -- especially because it wasn't from first lady Michelle Obama.
"I want to thank everyone who is here, the incredible warmth and reception. A sign of the warmth is the lipstick on my collar," the president said during the event marking Asian-American Pacific Islander Heritage Month, drawing laughs from the audience. "I have to say, I think I know the culprit."
(Photo: Getty Images/BRENDAN SMIALOWSKI)
Obama calls out American Idol runner-up Jessica Sanchez's aunt.
"Auntie, right there, look at this," he said, pointing to his collar.
"I do not want to be in trouble with Michelle," Obama said, "that's why I'm calling you out."
Watch Obama explain the smudge:
Turning to more serious matters, Obama lauded Asian-Americans and Pacific Islanders for helping build and defend the United States, and he called for immigration laws that would respect that history.
A White House-backed immigration overhaul is working its way through Congress. The bill would remake immigration laws, enhance border security and put the estimated 11 million people living in the U.S. illegally on a path to citizenship.
The Associated Press contributed to this report.