facetard
A person who can’t stop using Facebook, like it’s the only thing keeping them from going insane.
My brother is a facetard. He uses Facebook so much, he’s got 500 friends and still doesn’t know who half of them are.
My sister is a facetard. She posted 200 selfies on Facebook last week. I think she’s trying to get a brain tumor.
My dad is a facetard. He spends 4 hours on Facebook every day. He even posted a video of his dog sleeping.