Top definition
the product or a facebook rumor concerning two people messaging often, leading to suspicion that they are dating.
John: Did you hear about Eric and Lizzie on Facebook?

Sarah: No, what happened?

John: They've been on each others walls so much, it seems like they're having a facebook baby
by GandalftehWhite March 08, 2009
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2
A baby of two people who met on Facebook.
"Alicia is our Facebook baby. He first poked me in January, and I moved in with him that same month, and she was born in October"
by Tochterlieber March 24, 2017
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