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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 02, 2006
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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2
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.
by Bob February 21, 2005
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3
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
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5
Gangus Strike Force

G.S.F serves and protects the community agains gangus people. If a gangus person is spotted in a public place, G.S.F is informed, and they remove the person from the area by any means Necessary.
person 1: ew look at that gangus bitch
person 2: call G.S.F before its to late
by El-raaa August 04, 2007
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6
<d33> how do i maek teh webpaeg redirect????!!
<qui> gsfs
by easileigh April 25, 2003
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