FLSFC 

Full Length Sub Frame Connector(s).

Structural Metal components normally consisting of square or rectangular tubing that is welded to a car's chassis to stiffen the unibody.

I had to put FLSFC's on my car so it would go around corners, preventing the chassis from twisting like a pretzel.

FLSFC by ac427cobra April 11, 2013

flfc 

This is an acronym that stands for first like first comment.

On an post online, Jack sees that he by liking the post, he will be the first liker, and if he comments the first commenter. So he comments, "flfc" to let people know that HE was in fact the first liker and first commenter.

flfc by adancewithwinter January 31, 2016

Fysfcbwab 

Offensive disrespectful way

I hate u Fysfcbwab

Fysfcbwab by Fysfcbwab May 8, 2021

flufcin 

A straight up yalinga with fluffy ears

Hey that flufcin digging through the rubbish

flufcin by Garythefeeler November 29, 2021