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Usually misunderstood as "what the fuck", real purpose of this word is to welcome guests in Finland, "Welcome to Finland"
David: Nice to meet you, and wtf.
John: What? I'm leaving.
by David Odd December 30, 2010
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23
Stood for What The Fuck but changed to White Trash Fuckers after

Donald J. Trump was elected to presidency.
At a Trump rally
Person 1: WTF
Person 2: IKR I was like what the fuck when I saw all these people too.
Person 1: No I mean everyone here is a white trash fucker.
by Excalibur with Numbers November 21, 2016
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24
WTF (Windows Text File) is a plain-text file format developed by Microsoft. It is intended for storing text information in readable form. Many users report problems opening it, because most systems don't know what to do with the .wtf file extension. The resulting error messsage "WTF? Unknown file extension!" is widely known. The chat acronym WTF is commonly used to signify uncertainty or unpleasant surprise.

As part of Microsoft's effort to develop free, open, user-friendly software environments, it is constantly improving file formats. After WMV (Windows Media Video) and (WMA - Windows Media Audio), it published proposals for WMP (Windows Media Picture) and WTF (Windows Text File) in May, 2006.

"WTF?" is the usual response by many users, who are not sure how Microsoft intends to compete with TXT format. Microsoft's release timeline calls for the TXT format to be made obsolete within months, by disallowing Windows Vista to open .txt files.
System Requirements

* '$30.00' license fee for usage
* Cheese grater
* 76 IQ maximum (any more and KERNEL32 takes a dive)
wtf
by Kodiac1 December 10, 2006
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25
1. One or more natural flaws that occur in every known female. It refers to the fact that every girl/woman has something about them that will make you (as a guy) exclaim: "What the FUCK!?" It is usually something that they consistantly do or say that doesn't make sense to a guy, but since all girls are crazy, they think it is normal. These flaws differ in most girls, but are almost always present.
(If you know of a girl without a WTF please inform the author.)

2. The pissed off/annoyed/frusterated statement "What The Fuck!?"
Are you kidding me? You just came her to look around and not buy anything?? WTF?!

You just want to be friends with him, but you do like him and like hanging out with him all the time alone? WTF!?

She always does this shit! WTF
by ZachX September 19, 2007
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26
this is sometimes misread by “what the fuck” but really means “well THAT’S fantastic!” or “well that’s FANTASTIC” in two ways good or bad. plz use with caution
boy:I got an A+ in math
mom: wtf
boy: Is that a bad grade
mom: no it means “ well that’s fantastic
via giphy
by water_lilly July 12, 2019
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28
Who the fuck
The (w) is meaning who instead of what
Person1- omfg I just saw Garrett Hedlund at Starbucks
Person2- (w)tf is Garret Hedlund!?!?!?
by E/V August 05, 2011
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