PHILADELPHIA (CBS) — Facebook CEO Mark Zuckerberg visited Philly over the weekend and got in on the great cheesesteak debate!

The Facebook founder posted a photo of his visit at Pat’s King of Steaks on Sunday night.

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Zuckerberg said he “traveled all the way to Philadelphia for the best cheesesteak in the land.”

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Pat’s employees say they were stunned when the billionaire approached the window.

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“He was just a really normal guy. You would have never really known the guy is worth half a billion dollars or whatever millions… you would have never known it,” said Pat’s King of Steaks night manager Michael Boninfante. “It’s just really cool to find out that a guy larger than life, at the end of the day, is just a normal guy.”

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So the big question is what did Zuckerberg order? According to employees, he and some friends went for six steaks, “wiz wit.”