flaco

spanish for skiny or thin

hey you FLACO you better eat somethin'

by linda October 26, 2003

Fluoride Surprise

The sexual act of a man ejaculating into there partners mouth, then rubbing their penis along their teeth simulating the brushing of teeth.

Johnny:"Mommy, why are you're teeth so white?"

Mom: "Well daddy is really good at fluoride Surprises."

by BigAssJimBo June 10, 2012

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...

by 1plus1DoesNotEqualPotato September 12, 2016

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

by Immense fiend December 13, 2015

Fluctuweight

When a person's weight seems to shift drastically every time you see them.

Sam: Hey did you watch Oprah today? Damn she's a fucking cow this week.

Paul: Yeah, she fluctuweights like air mattress with a leak in it.

by Oliverrrr May 13, 2010

Fluctuous

used to describe a nice ass.

J Lo's ass is fluctuous!

by DRivas January 5, 2012

flacons

The little pink bars displayed on message board forums, representing negative reputation.

The result of being negbanged, or worse, negraped.

Different than red bars, which are called debbies

For more, see BF51

If I get any flacons, I am deleting the account.

by aleph null February 19, 2014