1 definition by Tom Bosly

F.K.

F.K. is a short form for fat kid. It is said so the fat kid you are talking about does not know you are saying fat kid so it will not offend him/her.

Haha Mike look at the F.K.
I'm laughing so hard I can't breathe because I see the F.K.

by Tom Bosly June 18, 2006