What is Gfn?
1.
Acronym for "Good for nothing."
George Bush was most definitely gfn.
See
2.
Acronym that literally translates to "gay fag n00b"; in practice, refers to a player in a video game lacking even the most rudimentary skills, and implies an inability of said player to ever gain them.
"I don't want that GFN on my team."
"Just kick that GFN and let's start."
See