1 definition by iguessnot

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 02, 2006

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×