Fleetuation 

Experiencing intense romantic and/or sexual feelings for someone that only lasts for a short amount of time. Fleetuation often ends when the person experiencing it realizes it would never work out or that their feelings are only one way. After fleetuation the person is able to move on with their life like they never had a crush in the first place

"she's been experiencing fleetuation ever since that new guy showed up, I don't think she knows he has a girlfriend already"

Fleetuation by The Wayward System March 19, 2025

butt fluctuation 

the movement of curvy butts when women walk in tight jeans or shorts.

dude,behold the butt fluctuation of that gal in white shorts.

butt fluctuation by sudhanshuranjan April 29, 2008

Franklin Fellatio Flatuation Breakup 

She's giving you head, you take your dick out of her mouth, fart in her face and end the relationship on the spot.

I was so sick of her so I gave her a Franklin Fellatio Flatuation Breakup (FFFB) and got out of there

Franklin Fellatio Flatuation Breakup by TooFingFunny May 10, 2018

fluctuation spectroscopy (flusy)

A technique developed to measure the molecular weight of macromolecules by analyzing the spontaneous fluctuations that occur in the inherent thermodynamic concentration of solute molecules in a selected volume.

analyzing the spontaneous fluctuations that occur in the inherent thermodynamic concentration of solute molecules in a selected volume. fluctuation spectroscopy (flusy)

fluctuation spectroscopy (flusy) by flusy January 12, 2009

Flactuation

Farting whilst being incredibly overawed. Love what you're looking at but it kind of bothers you too.

I know he's a bad fucker but I have a real flactuation for him, I just seem to excitedly fart every time I see him.

Flactuation by Mama Bee June 21, 2016

Flextation 

The need to flex amongst your teammates in Fortnite before you get shit on, but you will still look good dying

What’s important is your skin cause you gotta look either cute or cool in battle , part of a flextation

Flextation by BabyChocobun June 13, 2021

Flirtuation 

A super flirty situation. Good or bad.

person 1: Hey you're HOTT!

person 2: You're hotter.

The obvious good, recipricated flirtuation

person 1: Hey baby, lookin good!

person2: Get a life.

Rejected obvious flirting

Flirtuation by cupcakeviolence August 29, 2010