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1.
A person that is totally in love with their iPhone/iPod.
Generally an iTwat is unaware of the gimmicky kitschiness of their beloved device.
You will see the iTwat lovingly caress their overhyped consumer appendage with their spirit fingers with a look of unwarranted pretention on their face that can only be obtained by the delusion that they now have an elevated social standing that can only manifest itself by lovingly caressing their overhyped consumer appendage with their spirit fingers and having a look of unwarranted pretention on their face.
Put your phone down Jay, stop being an iTwat.
by anti iphone July 10, 2008
 
2.
An individual who is constantly fucking around with new technology and doesn't mind telling you about it.
"On a bitterly cold January evening thousands of itwats shivered through the night determined to be the first to get their hands on the latest iphone."
by johnnypeach January 15, 2011