There's a video of a conference presentation by Gary Bernhardt about surprising behavior in the Ruby and JavaScript computer programming languages.
At the beginning of the video, Seth asks the audience:
You guys know what 'wat' means?"
[He makes a 'wat' sound. He also shows a silly photo of a donkey, perhaps on a boat, wearing some waterproof clothing and holding a cat.]
Someone from the audience replies with some reply which is inaudible in the video.
Seth tells the audience member:
Exactly, exactly.
Well, what does "wat" mean? I did a Web search for the query [ wat sound ], but didn't get any answer.
Best Answer
Unforgettableid is correct, it is synonymous with "what" as in exclaiming surprise or bewilderment at a given situation.
I disagree somewhat with the quoted material, however, which states that 'wat' arrived in its current shortened form just for ease of typing.
I think the 'h' gets dropped precisely because it connotes a more sound-like visceral reaction.
I believe that the person exclaiming 'wat' is such a state of surprise that they are participating more in sound than language and want to directly connote this feeling to the reader in a kind of playful tongue-and-cheek way. My answer might be too in the realm of speculation or linguistics but maybe not, I'll give it a go.