Fat Kids. Hardcore Gang based in Las Vegas, Nevada. They have been known to mark there terroritory with graffiti and are very violent. They are seen wearing Black Bandannas out the back left pocket.
FK is a Hardcore Gang is Las Vegas.
by Iquestion January 23, 2011
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A more recent addition to the numerous abreviations to the English language used in AIM / MSN / online gaming speak (or 1337 as it has been dubbed).

Stands for 'fuck knows'.
fks how he made that shot, must be a hax0r
by daveeee July 12, 2004
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i got to fk that hot chick!
by John December 19, 2004
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Hang with friends, do something fun, adventure
Bro we should fk this weekend i’ve been so bored
by john_bentlyfishing October 4, 2019
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Custo: trid FK pol?
(do u want an FK pol?)
Pol: int pufta anzjan mur xuttja l em bil kontra a pes pufta anzjan u l FK mur tija l misssssssssssssirek duk il pufta l ihor a pufta l int
(polish reply..)
by Karist April 3, 2008
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Flag Keeper. The title used for the student of the Faculty of Environment at UW. The FK is responsible for taking care of the es flag and keeping the memory of ES alive within the ENV Crew.
I'm not the flag bearer, anyone can carry the flag... I just keep it. I'm the FK
by yeeaaaaahhhhhhh December 13, 2010
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