The same meaning as "What the fuck," just saying the letters out. Mostly Australians use it, but it sounds funny as hell.
Bob: Hey man, did you see that girl last night?

Sticky: W-T-F man, you went to the club without me?
by Ukyo Hikuraga. March 16, 2005
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*playing Halo* "WTF? n00b!!!" ~ almost every player on Halo
by Dirge January 30, 2005
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Of course there is only one known definition of the phrase Wtf and that, of course is Wilbur, that frigg-nugget.
Ellie: OMG WTF!

Jessica: Whoโ€™s Wilbur?
by I.make.weird.definitions January 23, 2019
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An overly used internet acroynm said to mean 'what the fuck'. Fun to say around old people.
person: dude, wtf is that?
by Zi October 03, 2004
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1. Used after becoming aware of an unbelievable or astonishing subject. Acronym for "What The F---?!"
2. In cases such as Amy the Slasher, it may also represent "Wells That Frequent?!" After one becomes aware of the well in her backyard she uses to dump her victims. The very notion of a well in a backyard prompts one to exclaim โ€”โ€” well, you know*. For more, see oh-so-convenient.

*Note: For those whose minds run at a lower rpm, that which one would exclaim here is not "Well, you know." Indeed, it is "wtf?!"
1. At the restaurant part of the date, Shannon complains to the waiter, "Waiter, there's tomato in my hair soup!"
Mike exclaims, "Wtf?!"

2. After seeing 138 wells along the countryside on the road trip, a frustrated Jason bursts, "WTF?!"
by Nuclear Tank Factory March 11, 2009
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