I'll try and make it as brief as pos.
When ex and his brother were teens, they became obsessed with 'LA Gangsta" type movies and music. As a result of this, they started calling each other "nigga" all the time. This nickname that they have for each other has continued and they still do it today but it's ALL THE TIME. They will say it many times in just one sentance for instance. It's so natural to them now that they don't even think about it, laugh or acknowledge it at all.
Problem is both ex and his brother have resently experienced relationship breakdowns and moved back home with their mum round about the same time. So now when DS visits his dad, he is around his brother too and routinely hears the nicknames.
He has started copying.. I have told him off but he hears it that often it's becoming part of his normal speech too and I HATE it. For instance he slips out with "Can i have a drink please nigga?" etc (only at his dads, not with me) but I have heard him say it at home too.
Today at school however, I was called into school as during football, DS shouted "pass us the ball then, nigga".
I can't stop him from going to see his dad and his dad laughed it off when I told him about DS copying. What more can I do? I am really worried we are going to seriously offend someone or get into a lot of trouble. DS says he is trying to stop saying it but I don't know if he is trying or not.
How do I make his dad realise that it just isn't funny for a kid to be going around saying this??