Facesibling
A fake sibling you claim on Facebook just to make your profile look cooler. No real connection. Just a big lie to impress people. It only works on Facebook.
My cousin’s profile has 12 facesiblings. None of them are related. Just a bunch of friends trying to look popular.
I added my pizza guy as a facesibling. He accepted. Now he thinks I’m a weirdo.
My facebrother is my ex. We still call each other facesibling. It’s a weird thing.