unfff 

A term used on tumblr and other sites usually posted in conjunction with a picture of attractive people/persons maintainer of said site would have no qualms fucking

Person 1: I'm going to post a picture of some cute hipster chick on tumblr! what should I tag it as?

Person 2: why not use unfff?

unfff by whatnotery August 23, 2011

unfff 

Scientifically proven sound a man makes when kicked in the testes.

Captain Falcon: FALCON... PUUUUNCH AT BALLS

Innocent bystander: OH SHI--UNFFF.

-Graphic Image-

unfff by The Captain Falcon in example. September 27, 2010

unfofo 

Unfortunate but in a less serious manner

John: I got to the restaurant in time before they closed, but they were already sold out of everything :(

Daisy: unfofo.

unfofo by dosine February 8, 2019

Uneffable 

Someone who is so indescribably unattractive that it is impossible to fuck them.

"I've thought about it dude, but she isn't just ugly, she's mean. Totally uneffable."

Uneffable by Matty B Good May 19, 2009

uneffingbelievable 

A cleaned-up way of saying unfuckingbelievable.

Well my little sweetheart, your drawing is nothing less than uneffingbelievable!

uneffingbelievable by Dr Bunnygirl July 18, 2020

Unofficial 

Short for Unofficial St. Patrick's Day, this is an event held each March at the University of Illinois at Urbana-Champaign. This is the largest local drinking holiday in the United States. It was created due to St. Patrick's Day being held over U of I's spring break. Students from across the country visit Champaign-Urbana to take part in this, as their schools do not consume as much in an entire decade as U of I does on Unofficial.

"Dude, don't you love going to IU?" - Indiana Student 1

"No, I am going to U of I this weekend to celebrate Unofficial. I wish I had gotten good enough grades to get in there." - Indiana Student 2

"Yeah, you're right. They are better at academics, athletics, AND they have way more fun." - Indiana Student 1

Unofficial by Subway142 February 9, 2013

Unofficial Relationship 

When you do what people in a relationship would do but, You aren't dating yet.

Person 1- Are you two dating?

Person 2- It's kind of a Unofficial Relationship type deal..

Unofficial Relationship by PattyB. January 23, 2016