Direct translation of "Hak 7".
1. Hei Chi (Mandarin)
2. Black Seven (English)
It can also mean black dick in cantonese.
Normally used by people to call dark skin people with a condition that the person being called is a "VERY" close friend.
1. Yo "hak 7" wassup (Eg. Calling a close indian friend)
2. Most females prefer hak 7 cause its big and long.