A boy or girl that one may find attractive in real life, but when you go home to stalk her via Facebook, you find that she has little to none attractive pictures. This is a downer when you try to show your friends a hot girl on Facebook; but unbeknown to you, she doesn't have many attractive pictures, making you look like a fool for thinking someone is hot who appears not to be.
Guy 1: Dude, you gotta see this chick she's so fine.
Guy 2: Bro.. that girls ugly as sin..
Guy 1: No way! She may be Facebook Ugly, but in real life, she's a pistol!
Guy 3: You need to check your sources before thinking a girl is hot, man.