Its a word that has two meanings.
A. Meaning "My G"
B. Meaning "idiot" or "Fuck-tard"
"Wassup nibber" or "You nibber!"
Nibber is the modified n -word for everyone.
It has two meanings:
a. It can mean "My G" or "Friend"
b. It can also mean "Idiot" or "Retard"
"Wassup my nibber!" or "You nibber!"