GSF

Group slut fic. Refers to a type of erotic fanfiction in which any and all members of a particular (usually all male) ensemble cast have crazy sex with each other. Probably originated in popslash fandom.

OMG, I just read the hottest GSF. All the members of *nsync were having hot mansex to the sweet strains of "This I Promise You!"

by iguessnot July 3, 2006

GSF

The Grove Street Families of Grand Theft Auto: San Andreas. Sweet, CJ's brother, is the leader of GSF, although CJ is the brains behind the organization.

oh yeah GSF for life!

by Bob February 21, 2005

GSF

It's not "Girls Suck Forever," it's Girls Shmirls Foundation. Get it right or pay the price.

I'm joining GSF, I've made up my mind. Forget this thing called love, it's a waste of time.

by Joel November 17, 2004

GSF

Gotta
Stay
Fly

Ey ma you know how it is. GSF.

by GottaStayFly.er September 7, 2010

GSF

Give a shit factor

Jim: "Can you get that report done?"
Bob: "Man, with it being so close to the holidays, my GSF is low. Can it wait till Monday?"

by onesmartcookie38 December 27, 2011

GSF

It is an acronym for Gorgeous, Stunning, Flawless. To be used as a positive expression.

The pictures from this magazine photoshoot are GSF!

by aicetera September 8, 2010

GSF

"Girls suck forever" a popular song by the band MXPX.

Man, screw love, I shall join GSF.

by drozz August 19, 2003