Facebook Hag
A Facebook user who lets someone not on Facebook post their stuff on their page. They’re like the worst kind of friend.
My dad is a Facebook Hag. He let my mom post her bad hair day on his page for everyone to laugh at.
My neighbor is a Facebook Hag. She let my little brother post his weird dance on her page.
My brother is a Facebook Hag. He let my sister post her failed cooking on his page.