Noun: Pronounced "UF-Foes".

Acronym for "Unidentified Faction Orientation Syndrome"

When a group of cunts, jocks or sluts support the nameless guy that nobody knows at the back of the class with no friends so they look good infront of the other factions, that said nameless person gets "UFOS" and evolves into a Level 2 "Ufo". He then usually becomes part of the group.

Also, sometimes acronym-ed to "Unknown Fucking Organ Donor" because that's all they're good for really.
Slut: "Hey there honey, what's your name?"

Everyone else: "Holy shit, they got another one. He's an Ufo now."

Teacher: "Everyone please be nice to our new Student, Tom Yung."

Everyone: "Uh god, there's another kid with UFOS... Who's gonna snatch him first?"
by The Udon:|:Suicide Death Panda February 15, 2012
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This was an incredibly successful, albeit controversial pornographic film which surfaced on the internet in early 2007. It alleges to depict actual extraterrestrial beings engaging in sexual activity. Skeptics claim the beings are not genuine, but that their 13 inch penises are.
I just got done watching UFO Porno, and I must say, it was quite the adventure.
by Joey Orgler 3 February 8, 2008
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One of the few Arcades in the United States (located in Austin, TX) that you can play Street Fighter 4 on official cabinets among other new import arcade games otherwise unseen in the U.S.

Ima Arcade UFO your face off. MASH HARDER.

MAHVEL BAYBEE
by Pervert_Q October 13, 2008
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The act of pooping, freezing it into a puck, and jizzing on it. Then you throw it on a random person creating a dirty Unidentified Flying Object
Me and Ryan Delaney went and threw dirty UFO’s at people the other day, it took us a week of poops to save up.
by Spawn of Hecate July 3, 2022
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really cool person but not cooler than me smh yeah
“Ufo cookie is not cooler than milk
by spooy October 3, 2021
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When you run out of UFO/alien stories to tell, you simply just make up new ones. ~ Kerry Cassidy’s ex husband.
Darn I need to keep my YouTube career going or I won’t get paid. I’ve run out of stories to tell about ufo’s, so I have to make some up! Hope no one sees that I’m suffering from UFO disease
by Fly Boy 48 April 1, 2021
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When you are out fucking off at work, and the boss see's you.

U
Fucking
OFF

Sighted
There was a UFO sighting in the break room when Jody was supposed to be at their desk.
by Ken Gman March 5, 2008
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