look up any word, like vai tomar no cu:
 
8.
UFO
The sexual act in which a man performs on a woman (preferably someone's mother). First all the lights are turned off for total darkness. Next the man slips a glow-in-the-dark condom over his penis and then begins to float around the dark room; thus giving the effect of a flying spaceship, or other un-identified floating object. The woman then is invited to catch such object with whatever she pleases, i.e. her mouth or other orifices. When the man grows weary of floating around, he then proceeds to crash-land his "ship" into the woman's "Area51”.
"Hey Mitch, I totally UFO 'd your mom last night ! "
"She always loves when I crash my UFO in her. "
by Matty58 March 27, 2008
85 75
 
9.
ufo
1. Unidentified Flying Object. Usually refers to an alien spaceship that we don't know anything about it

2. Ugly Fat Old. Usually describes women who are well past their days, and even then they probably weren't very hot. They are usually seen in public in twos or threes and the only thing they do is talk to each other no matter the circumstances.
1. That UFO just crashed down in an open field. We have no idea where they came from.

2. Some UFOs sat in front of me at the movie theater the other day and they wouldn't shut up for the whole entire movie.
by tuesday22 July 05, 2012
10 1
 
10.
U.F.O. stands for: Unidentified. Flying. Object.

It's what all the phoney pics and such are all about, aliens, outer space, etc.
Farmer Billy: "Pops, I think I saw myself a U.F.O. last night"
Farmer Tom: "No sonny, there is no such thing as aliens"
by Marauding Master October 27, 2006
19 11
 
11.
UFO
Unidentified Frozen Object. When you defrost a freezer sometimes you find a UFO that has been there for a long time.
We defrost our freezer once a year and we discard any UFOs
by kshell April 10, 2010
23 17
 
12.
The sexual act in which a man performs on a woman (preferably someone's mother). First all the lights are turned off for total darkness. Next the man slips a glow-in-the-dark condom over his penis and then begins to float around the dark room ; thus giving the effect of a flying spaceship, or other un-identifided floating object. The woman then is invited to catch such object with whatever she pleases, i.e. her mouth or other orifaces. When the man grows weary of floating around, he then proceeds to crash-land his "ship" into the woman's "Area51" .
"Hey Mitch, I totally U.F.O. 'd your mom last night ! "

"She always loves when I crash my U.F.O. in her. "
by Matty58 March 26, 2008
12 6
 
13.
UN FUCKABLE OBJECT'S = Fat Ugly Bitches
Yo Chris look at those UFO's standing at the bar.
by playtowin June 15, 2011
7 2
 
14.
unidentified forces of surveillance
big brother cameras everywhere, suspected alien ufos that are actually government or corporate surveillance, spy planes, etc.
by ms. becky sue August 07, 2008
6 1