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An .NFO main use is to contain information about a certian computer system. Users can save their computer specification as a .NFO and share with others - usually for technical support reasons.

It is also used with pirate software packages by groups such as 'Paradox' who consider an .nfo as a way of being elite. If opened in notepad, the file is a simple text file, usually containing an ASCII logo, the software piraters name and the serial number to the package.
Paradox: Yes! We use .NFO's ! Everyone knows we mean business!
by SnipaMasta January 08, 2006
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Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
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A Nonsexual Facial Orgasm, this can be reached by relaxing your head and then rolling your eyes back while biting and touching your lip. The results are fantastic.
Dude, I did some serious Nfo-ing last night!

or
Brb, gonna have some nfo's quickly.
by R_Zombie12345 January 10, 2021
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4
Text files that contain information have the extension of ".nfo", so that it's easier to distinguish what is contained within.
by Infographics February 03, 2009
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5
The .nfo file included with a pirated software package. Those in the know will open this with MS Notepad, as it is actually a plain text file. The nfo usually contains a pirate "crew"'s ascii art logo at the top, which bears a resemblance to raw code to the uninitiated, and gets mangled into gibberish if opened in anything other than Notepad.

Usually associated with: ISO, crew, rar, crack, keygen, rip, reg, courier, 0-day.
Q: "I opened the rar from the 0-day. Many thanks to the courier & crew for this one; glad it's not a big ISO. But where's the serial number? Or do I have to use a keygen to reg this rip?"

A: "Just open up the nfo, newbie. The cereal is in there."
by Nupe January 06, 2004
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6
Nipple Freak Out
-often happens to females when cold and/or aroused
Rachael: OH! NFO! I must go put on a bra!
Martha: It's okay, you can wear my sweater.
Rachael: Thanks, friend! You are very sexy by the way.

Georgia: Oh DEAR! It's so nippy noodles outside! I'm NFO-ing!!!!
by gossa May 27, 2009
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