The Chernobyl Uranium Stainium is when one shits in their pants so hard it has to be considered a nuclear accident.
by Coco puffs chomper December 3, 2020

The best way to say or write "Fuck you" without getting caught. The element symbols of these elements spell out "FUCKYOU"
by wqufhoefi2cuhjhiveej November 29, 2017

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.
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!"
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!"
by Awesome Nerd. April 21, 2011

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...
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...
by 1plus1DoesNotEqualPotato September 12, 2016

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
by Immense fiend December 13, 2015

Person 1: yo u done the homework
Person 2: fuck no
Person 1: lemme copy
Person 2: NoBeLlIuM YtTrIuM oXyGeN uRaNiUm
Person 1: tf
Person 2:
Person 2: fuck no
Person 1: lemme copy
Person 2: NoBeLlIuM YtTrIuM oXyGeN uRaNiUm
Person 1: tf
Person 2:
by ぽぐ December 10, 2020

by Cheesy Comics October 11, 2018
