Sad Fat Girl. The girl amongst a group of hot girls who is fat and sad about it. Often a cock block since she will only become more sad when men hit on her friends.
Check out the group of hot chicks. Oh wait, I see an SFG in there. One of us will have to take one for the team.
by Shaneshaface February 10, 2013
"So Fucking Gay."Gay as in the sense of the word "lame," not of the homosexual or gaiety variety. Used in response to someone who likes to post a lot of lame acronyms online. Synonymous with stfu.
by fookyuu March 01, 2011