facemum
A fake mom you put on Facebook so it looks like you have a real life. She’s not your mom. She’s just some lady who let you use her profile.
My facemum is my ex’s aunt. She let me use her profile so I looked cool.
I put my neighbor’s mom as my facemum. She didn’t even know.
My facemum is my cousin’s grandma. She’s 80 and thinks Facebook is a game.