Somebody who is addicted to computers and can understand any code or hack. They can fix or hack any computer they want, and they are literally a genius.
Dan is so qwerty. Everyday, he is fixing the school's computers or doing codes on his own computer
Qwerty: a female that self identifies with various aspects of 'Geek' or 'Nerd' subcultures who tends to arouse sexual desire or interest. A strictly positive personality quality which connotes sexiness, with the potential for promiscuousness, but without the negative connotations generally associated with being sexually open.
Holy shit, this cute girl wearing a 'Han Shot First' T shirt just fucked me on all fours, and asked me to cum on her glasses. I fucking love qwerty girls.