Define Oh Mah Nigga Meaning

Oh Mah Nigga
When a nigga is so fuckin suprised that "oh my god" isn't enough and you gotta take it to the next level

Nigga 1: Did you really just jack all dat dank?
Nigga 2: Hell yeah
*opens box*
Nigga 1: OH MAH NIGGA! THATS ENOUGH FOR A LIFETIME!
By Modestine