FSL

Fuck, Suck, Lick. Perfect acronym to avoid sounding like a douche.

"Bruh, my girl just invited me over to her house and told me her parents aren't home."
"Bruh, she wants the FSL treatment."

by RebelDroomzyD January 31, 2015

FSL

Short for 'Fantasy Slut League' - similar to a Fantasy Football League except you draft real people and are awarded points for 'documented' sexual encounters with them. Frequently organized by high school males without informing the female draftees.

League Member: I had a three-way with two of my draft picks this weekend. *shows phone pic*
League Commissioner: Encounter is validated and I award you +24 points, making you the FSL points leader.

by White_Rob October 23, 2012

FSL

Fish Smell level, in the vaginal sense of the word fish.

Man, you'd never believe the FSL on that ho.

by Rox February 8, 2004

fsl

for-shit-legit: seriously, for real

Dude, I fsl lost a pint of blood when I fell off that half pipe

by streetlights June 26, 2014

Fsl

A casual texting abbreviation meaning “for so long.”

Used when you want to emphasize that something took an unusually long time, often with mild frustration, sarcasm, or dramatic flair.

> “Bro this update was downloading fsl 😭”
“I haven’t seen you fsl, where you been?”

by kaixbi December 19, 2025

FSLA

Future Sweatpants Leaders of America. Kids wear sweatpants every wednesday and are leaders. These are the brightest kids in the land and attend only top colleges. This club helps to fight Sweatpants stereotypes and profiling.

I totally rocked the crap outa those sweatpants for FSLA.

by The Leader of FSLA December 15, 2010

fslr

Frozen strawberry lemonade refresher

Also kinda looks like F SL(U)R

I went to Starbucks and got an FSLR.

by Chiddy August 24, 2023