During President Barack Obama's speech in Phoenix on Tuesday, one woman screamed, "Happy birthday, Mr. President" from the audience. The disruption then incited an impromptu singing of "Happy Birthday" to Obama.
"Michelle says that I don't look a day over 51," Obama joked.
Obama's birthday was on August 4th. He turned 52-years-old.
Watch the crowd sing "Happy Birthday" to Obama above.