1) An abbreviation for Fat kid
2) what you call a friend (affectionately) or non friend (who doesnt know what it means) when they do something a Fat kid would do (eg: scarf down food, fail to get up stairs, breathe super hard after running a short distance, etc)
Ex 1 :(while looking at an overweight classate you dislike )
Friend 1: He told me I was ugly!!
Friend 2: Ha! are you kidding?! he's a total FK

Ex 2 : (Said to your friend while she scarfs down her burger)

Friend: haha FK moment
by Jess'sBFFWhoCantRidePixi September 3, 2010
Get the FK mug.
Free Kick or Foul Kick.Used in Soccer when a player commits a foul, the opposite team gets a FK.
Team "X" scored there winning goal with a FK.
by Bakhsh June 29, 2006
Get the FK mug.
FKS First_Kid_Syndrome Describes someone who is involuntary , naturally competitive

P.s Some people with First kid syndrome may be pathologically narcissistic 3:)

If you're FKS type person, you want to be the best.
People with FKS like to compete — to find out who knows the most, runs the fastest, can eat the most hot dogs, and so on.

- AAA
- AAA : Stop being so focken competitive >.<

-WMD : Sry :p Can’t help it baiby :) blame my FKS ;)
by Phenomenal AAA WMD February 26, 2019
Get the FKS mug.
FK = Free Kill
Used in the gaming world
Mikki: LoL, killed a bunch of people from the behind
NoX: -.-, FK's... really nice
by NoXstar September 2, 2005
Get the FK mug.
Bob: Hey what happened to Jeff
Sam:Oh I don’t usually hang out with him anymore he’s kinda a FK now
by Jteller May 21, 2019
Get the FK mug.
"F-L-A-M-E-R K-A-S-E-Y" (to the tune of Mickey Mouse Club)
Oh, whos the gayest one of all; who likes crembrule?
F-L-A, M-E-R, K-A-S-E-Y.
Who thinks afghanistan is north of Canada?
F-L-A, M-E-R, K-A-S-E-Y
Kaseys GAY! Kaseys gay.
now we know who likes crembrule!
So come along and sing the song; make fun of him all day.
F-L-A, M-E-R, K-A-S-E-Y, HES GAY!
by webster September 20, 2003
Get the FK mug.