I don't like the way my son talks

[Hamjamwich]

He's copying this from somewhere ? Talking in a ridiculous accent. Sounds like :
Man, innit, nah,
If he says "actually", he pronounces it "actulee"
His friends and family don't talk like this.
I keep correcting his speech but it continues and is driving me crazy. It sounds horrible. Only place I guess he could be copying it from could be You Tube?

Apologies if anyone feels this is inappropriate, but this is exactly what a lot of teenagers currently sound like:

https://youtube.com/shorts/YqDZXJpkKQg?feature=share

@buddylicious thanks for that