facebird - A Facebook user who shows up uninvited and takes over the co

A Facebook user who shows up uninvited and takes over the conversation like they own the place.

Commented on my post: 'You're a waste of oxygen.' And then liked it.

Posted a photo of my face and called it 'the facebird of the decade.'

Sent me a message saying 'You're annoying' and then added me to 10 groups.