A person who is a douche bag on Facebook. You know that guy who likes to talk about himself and tell you all about his day as if everyone cares. Then he proceeds to tell you how awesome he is and how many chicks he can score with, not to mention how many Jager Bombs he can do in a row.
1.A Facebag is someone who posts pictures of themselves with a camera phone flexing infront of the bathroom mirror
2.A Facebag is someone who refers to themselves in the 3rd person on facebook.
3.A Facebag is someone who makes the same face in every picture to try and look smooth.
4. A person who gives himself a a nickname like "The Situation" or "L-Bo"