BOSTON (CBS) – Were they boos or cheers for “Youk?”

Being booed was probably the last thing President Barack Obama expected from the crowd at a Symphony Hall fundraiser Monday night, but that happened when the president “thanked” Boston for Kevin Youkilis, who was just traded to the Chicago White Sox.

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“I’m just saying, he’s going to have to change the color of his socks,” the president said laughing.

Youkilis was traded from the Red Sox, to Obama’s favorite team on Sunday for infielder Brent Lillibridge and pitcher Zach Stewart.

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“I didn’t think I was going to get any boos out of here,” he said. “I should not have brought up baseball, I understand, my mistake, you got to know your crowd.”

On Tuesday, White House Press Secretary Jay Carney tried to clear things up on Twitter:

“Let’s be clear: POTUS, a proud ChiSox fan, thanked Boston crowd for Youk. Some booed. Others, like me, cried “Yoooouk!” in sad memoriam.”

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Youkilis went 1-for-4 with a single in his White Sox debut Monday night, but Chicago lost to the Twins, 4-1