dat -> that

[crystal]

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dat

Derived from THAT.

Commonly used by those who are either too lazy to add the fourth letter, or teen homeboys and teenybopper girls who think that it 'iz totali awzum to speel inkorectly'. These people commonly listen to bastardised punk and 'NU Metal'
Man, dat Good Charlotte is totalli awzum!
http://www.urbandictionary.com/define.php?term=dat

[crystal]

https://www.translatum.gr/forum/index.php?topic=160654.new#new