unidentified flying ob<x>ject. it basically is something witnessed or found on radar that was not scheduled to be in that air field. some have been identified eventually as things like a remote controlled airplane. others have yet to be explained. some people jump to the conclusion that it is aleins, which is why UFO is often shown as a flying disk like spaceship
Unidentified Foreign ob<x>ject.<br />
It means it hasn't yet been identified by the government, oneself or someone else.
a manifestation of the other intelligence.
Unidentified Foreign ob<x>ject<br />
Means something not from this planet
It's your mom