AFTER READING SOME OTHER COMMENTS:
Hi Erin,
It been suggested to me that perhaps you do attend church and have a pastor. If this is the case, I sincerely apologize. I would also talk to the pastor about your husband's language, because I am also a woman of color and the church I attend has many Black, Hispanic, Asian and Caucasian families. I have never heard a black father who attends church on a regular basis call his son or daughter their "lil nigga". And that extends to non-church functions. That is why I thought your family might not have a pastor.
ERIN,
Tell his mother, see if she can straighten him out!
There is NOTHING funny or joking about calling your son "lil nigga". If he hears these things and cursing from his father, who he loves, he will grow up to do the same.
I would say tell your pastor, but I have a feeling you don't have one.
Stop it while he's young!
Blessings......