fleren 

The ship between two lovers, Floch Forster and Eren Yeager from the anime and manga Attack on Titan. It's a gay relationship between two men who bounded themselves through the desire of saving their homeland and countrymen.

In the beginning, Floch didn't like Eren because he stood out for his childhood friend in the Serum Bowl event during RtS Arc. However, years passed and they banded together forming the Yeagerist faction, a paramilitary group who would take control of Paradis and rescue it from certain doom. Once Eren activates the Rumbling, he's separate from Floch, who's in charge of taking care of Paradis' internal issues.

A group of traitors and enemies is formed, they fight the Yeagerists and Floch is injured - the traitors escape using a boat. Floch is revealed to be hanging on that boat to try one last stand, which ultimately fails but causing the death of Hange Zoe. Even in his dying breath, Floch still entrusts Eren with saving Paradis...

I want someone to trust me like fleren

fleren by Astalriel December 15, 2020

flergeflamming 

Teachers or authority figures going out of their way to talk effusively and positively with young children about homosexuality and transgenderism, usually without parents' knowledge or permission. Synonym of "grooming".

I don't care what you want to call it, call it flergeflamming for all I care, just stop normalizing sexual discussions with children.

flergeflamming by anonymous February 21, 2023

flemperson 

Someone who likes spit (usually phlegm) spat into their mouth.

Person 1: Oh yeah! Put that flem in my mouth! I'll be your little dirty flemperson!
Person 2: ACK! PTOO!

flemperson by shane_y April 24, 2020

flerfer 

A person who believes that the earth is flat.

Not only is Jeran a flerfer he also believes many other conspiracy theories including that the moon landings were faked.

flerfer by ShatteredJP November 25, 2017

Florpendorp 

A part stormtrooper, part demon, part highschool boy creature that feeds on Pokemon and human beings. Seen only in the western region of Washington State, its favorite food is Charmander.

Florpendorp

Florpendorp by MMWS May 16, 2009

Flerken

The cat like alien creature that Captain Marvel keeps as a pet. While it may appear as a normal cute Earth cat, inside it's mouth contains a shit ton of tentacles, smaller mouths and even pocket dimensions and bubbles of time.

Rocket Raccoon - *Trying to kill Chewie the Flerken* You have a Flerken on your ship!
Captain Marvel - That's my Cat!
Rocket Raccoon - That is not a "cat"! That is a Flerken!

Flerken by slangctionary March 31, 2019

Flerspective 

a fictional magical property of persepective believed to be true by flat earth proponents to explain why the bottoms of distant objects can't be seen without admitting that the earth is sphere

You can't see the Roger's Centre across Lake Ontarion from Niagara-on-the-Lake because of flerspective.

Flerspective by Keigh See April 19, 2018