What is Omg U Hax?
1.
A '1337' way of expressing one's feelings about an unfavourable situation - most frequently used when someone is beaten, outdone or likewise. In full, it means 'Oh My God, you have used some sort of cheating mechanism to beat me'.
Originates from claiming that a computer gamer is winning by using a hack (see
Person 1: I got 100% on my exam!
Person 2: Omg u hax!