Facesibling
A made-up sibling you put on Facebook just to make your life look better. No real blood. Just a stupid title you gave them to feel important.
My facebrother is my neighbor’s dog. He has 500 likes. I have 2.
I put my math teacher as a facesibling. She laughed at me in front of the class.
My facesister is my mom’s best friend. She’s not even my age. It’s a disgrace.