The opposite of the N-word.
A white person, aggiN and reggiN are used to describe a white man.
White Guy 1: Yo whats up my aggiN
White Guy 2: Whats up man
Other Guy: SHUT UP STUPID REGGIN
If you say this word to someone, you will be fine, as long as you don't tell them to say it backwards.
What's up, reggin kcalb?