fitebrost 

A word uttered when the speaker is trying to say frostbite, but fails due to the cold on their face.

If it were colder, there'd be risk of fitebrost

fitebrost by stillkickinginKS January 14, 2018

the finebros 

The Finebros have removed this definition for copyright infringement.

The Finebros have removed this example for copyright infringement.

the finebros by Anti fandom freedom fighter. September 6, 2016

fibrostorm

When your fibromyalgia is out of control, and you are in the emergency room acting a fool to get meds.

"My pain is 300 on a scale of 0-10. I have taken all of my psych meds and I'm out of Dilaudid tabs. This is the worst fibrostorm I have ever encountered, and I just had a seizure while I was talking to you. I didn't know fibromyalgia could get this bad."

fibrostorm by Weekend Night Crew LLC March 6, 2015

firebrother

A brother that’s on fire

My brother calls himself “Firebrother” because he thinks it cool

firebrother by Spade and Shade September 12, 2020

FineBros effect 

Losing subscribers or followers on a social media/networking site.

Did you hear Youtuber X Got the FineBros effect after saying he did weed?

FineBros effect by plebcurry September 10, 2016