FLS

Short for Fake Lat Syndrom. FLS is when you use your side to push up your biceps so they appear larger.

Girls: Yo! Dayden's biceps are so BIG!!
Guys: No he just suffers from FLS

by Major Wang July 8, 2017

FL

Your First Love Basically

I Met My FL In 6th Grade.

by #cookieneverboobookittyfoh October 14, 2015

FL

An abbreviation used by members of the online fetish and BDSM community for the website FetLife. Commonly used on dating profiles to reach other FetLife members without writing out the entire word to avoid outing themselves to non-members.

Did you see my post on FL?

by The All Knowing Condom August 1, 2019

FL

Female lead

Charlotte: THE FL OF MOANA IS SO GOOD AND SHE'S CUTE

by Iuna March 9, 2022

FL

Condom. Short for "French Letter," a term used for condoms by soldiers during the two Worlds Wars in Europe, but almost never spoken in full.

Spoken as ef-el.

I don't wanna catch the clap but I'm plumb out of bloody FLs.

by paulpaxman September 5, 2009

FL

Fuck love

FL IM DONE WITH THIS HOE

by FZFFJ January 20, 2019

FL

a term commonly used to abbreviate the sexual toy, "fleshlight" used as a masturbation aid. Often two people, or a small group, will use the term to make others go crazy trying to find out what FL stands for, but upon researching FL all they find are statistics on the state of Florida.

Ynohtna-"yo tap you got that ""FL""?"
Tap-"uh? ya... ""FL!""."
Group-"What are they talking about?"

by Dirty Schmuck October 1, 2010