A term used for objects that people can't tell what it really is. They are believed to carry aliens and monsters of other worlds.
The term 'Unidentified Flying Object' is a contradiction
because the moment you see the object, it is identified. Therefore the proper term *should* be 'Incorrectly Identified Flying Object'
dude, I just seen one a' dem UFOs they's been talkin' about on the TV box. It's gonna probe our asses, Jimmy. *spills the beer*