Unidentified Forty Ounce
"Whose Forty is this?"
"I dunno man, I guess it's a UFO! I'm gonna drink that shit"
by Ari Giller-Leinwohl November 29, 2006
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Unidentified Fucking Object, which means a designer dildo
Jessica saw a UFO in the middle of Roxanne's bedroom
by Jumbled McGobbledygook February 17, 2021
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Recieving oral sex while under the influence or while smoking marijuana.
Bitch, you better give me some UFO tonight if you want that expensive ass purse !
by MixTape|KushKid|Basedboy July 27, 2010
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Nickname for LSD.

Or more commonly known as an Unidentified Flying Object(alien)
How do you like my UFO?
by Awful May 30, 2006
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"UFO" is short for "you for real" and is used when someone says something that's facts or hella lit. Is often used while bending your arm at a 90 degree angle and waving it forwards and backwards while shouting UFO.

Originated from "You're for real" --> "You fo real" --> "U fo" --> "UFO".
"Harsha's gonna get blacked out tonight"
"UFO UFOOOOO!"
by mike_hunt19 November 1, 2021
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Unidentified flying object as in similar to a space ship.
Your kickstepping legs are ufos, watch out.
by Jord February 14, 2005
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