While there might not be a spot in ‘The Guinness Book of World Records’ to praise Facebook’s oldest registered user — maybe there should be.

On Monday, Florence Detlor, the social network’s oldest registered user, celebrated her 101st birthday by crashing in on Mark Zuckerberg and his crew of hackers, nerds and programmers at Facebook’s California headquarters.

In the true spirit of the social network experience, yesterday, Facebook chief operating officer Sheryl Sandberg posted a photo on her personal Facebook page featuring her and the Facebook founder posing with the birthday girl.

“Honored to meet Florence Detlor, who at 101 years old is the oldest registered Facebook user,” Sandberg wrote on her own Facebook page Monday. “Thank you for visiting us Florence!”

While details of Detlor’s visit are not known, her latest Facebook status update says, “Its 10:15pm California time, Good night everyone. Sleep well.”

You too, Florence — and happy birthday!

Facebook's Oldest User
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