What is Aitch Phour?
The nickname for infamous internet hacker h4voCK. Pronounced "H4," because the first two symbols of h4voCK are H and 4, respectively.
Person 1~ "Man, did you see what Aitch Phour did to that CNN website the other day?"
Person 2~ "Shit, you mean h4voCK? I love that hacker."
Person~ "Yeah, first two letters of h4voCK are h4. Pronounced Aitch-Phour. Get with the program."