Skip to main content
Fluorine is an extremely reactive and poisonous chemical element with atomic number 9.
The lightest halogen and most electronegative element, fluorine exists as a pale yellow diatomic gas at standard conditions.
Fluorine by kittens Σ:3 July 8, 2014
Urban Dictionary Merch

fluorine silver 

This is a periodic table joke that translates into "FAg" |Fluorine (F)|Silver (Ag)|

Fluorine Uranium Carbon Potassium! 

An intelligent way to say FUCK . Each element has a letter to represent it, Fluorine= F, Uranium=U, Carbon=C, Potassium= K.

Also Yittrium Oxygen Uranium can be added to say YOU.
Person 1: "Its your turn to clean the toilet."
Person 2: "Fluorine Uranium Carbon Potassium!"

or

Person 1: "Fluorine Uranium Carbon Potassium the test is today!"
Chem Teacher: "I see you're practice your elements for your test, good job!"

Fluorine Uranium Carbon Potassium Bismuth Technetium Helium Sulfur Germanium Thulium Oxygen Neon Yttrium

The symbols of these elements spell out "FUCKBiTcHeSGeTmONeY." Alternate ways to do this include replacing Helium (He) and Sulfur (S) with Hydrogen (H) and Einsteinium (Es), and/or replacing Bismuth (Bi) with Boron (B) and Iodine (I). Some people have been clever enough to use this as their yearbook quotes.
"Fluorine Uranium Carbon Potassium Bismuth Technetium Helium Sulfur Germanium Thulium Oxygen Neon Yttrium!"

Fluorine uranium carbon potassium

The first 4 elements that sixth graders would try and look for when seeing the periodic table for the first time.
Kid 1: Hey, that's element F! I think it's pronounced fluorine!
Kid 2: I found C! C is for carbon!
Kid 1: And that's K! It stands for...potassium? What?
Kid 2: Is there a U somewhere?
Kid 1: I still don't get it, why is potassium called K?
Kid 3: Guys I found it! Down here! It's called uranium!
Kid 2: Oh yeah!
Kids 1, 2, and 3: (chanting) Fluorine uranium carbon potassium! Fluorine uranium...

fluorine uranium carbon potassium

Fluorine (F) uranium (U) Carbon (C) potassium (K), spells the word Fuck and is sometimes followed by yttrium (Y) oxygen (O) uranium (U) spells the word "you" and is a fun thing to yell and confuse everybody and there is that one person that laughs
Drew: fluorine uranium carbon potassium

Durham: wait what

Clint: haha

fluorine uranium carbon potassium yttrium oxygen uranium 

a clever way of spelling 'fuck you' only big brain people understand. gets past the roblox chat filter.

fluorine = F
uranium = U
carbon = C
potassium = K

yttrium = Y
oxygen = O
uranium = U
fluorine uranium carbon potassium yttrium oxygen uranium!
More from Urban Dictionary
A group of people, typically women, searching through someone’s digital footprint in order to find more information about that person.
Susie wasn’t sure if her new Hinge match was a creep, so she assembled Galantir and they found out he used to post slurs on gaming forums.
Galantir by Ge-sus September 22, 2026
Word of the Day on September 23, 2026

murderhobo 

In a tabletop game, a murderhobo is a player who murders NPCs indiscriminately. This is normally derogatory, referring to a player who totally ignores quests, dialog, backstory, trade, world building etc.

The term is most common with Dungeons and Dragons, but it can be applied to most RPGs where the player is allowed to kill most quest-giving NPCs and NPC traders. E.g. Elder Scrolls, Fallout, Divinity original sin.
DM: The sad little orphan girl tugs at Steve's trenchcoat to get his attention, and ask for help saving her pet dog from...
Steve: I'd like to roll a strength check against strangling the orphan.
Dave: I call dibs on the dog.
DM: You murderhobos disgust me.
murderhobo by Loup&S September 9, 2021
Word of the Day on September 22, 2026
In sales terms, a whale is a prospect that is significantly larger than an organization’s average customer.

Whales are large and extremely difficult to close. Due to their immense size, they are highly sought-after.

A whale is typically identified at first by a whale hunter on the sales team, but often requires cross-discipline participation in order to close; this includes assistance from operations, engineering, creative, client success, and business development teams.
"Shit...the sales director chewed me out on the sales call this morning. He's totally pissed that I have nothing in my pipeline. I've been focused on this one whale for so long that I haven't had time to prospect for normal-sized deals."
Whale by FQ_GFY February 3, 2020
Word of the Day on September 21, 2026

Concrete cowboy 

A guy who thinks he's a country kinda guy, but in reality lives a comfortable city / suburban life.
Eugene: Look at that dude in the cowboy hat!
Todd: He's just a concrete cowboy.
Word of the Day on September 20, 2026
any hard liquor that is cheap & potent.. eg. relska, popov, potters, evan williams, kamchatka, fireball, rumpleminze, southern comfort, everclear
hey let's get a drink of that?

go ahead
*takes drink* ugh wtf is that?

everclear & bepsi
fucking hobo loko eeessshh
hobo loko by d i z k o 2 0 8 September 14, 2026
Word of the Day on September 19, 2026

God Shot 

A chance happening with profound meaning, an unexpected blessing, a "sign".
Dr. Drew on Celebrity Rehab said "All of a sudden what had been just another Hollywood proposal became for him an unexpected blessing, an opportunity for growth. In drug recovery language, that's called a "God shot."
God Shot by Imogen1564 February 25, 2011
Word of the Day on September 18, 2026
Next