Facesibling
A person you claim is your sibling on Facebook just to look cool. No real bond. Just a title you gave them so you feel important. It only works on Facebook.
My facesister is my math teacher. She has 1000 likes. I have 5.
I added my pizza guy as a facesibling. He accepted. Now he thinks I’m weird.
My facebrother is my ex. We still call each other facesibling. It’s a weird thing.