Could you link me to a youtube-clip where they sound similar?
I just don't understand that sound, she lick dat aaah, she suck dat aaaah?
You'll hear the "ugh" thing at around 1 minute in, it's basically an expression of something really good happening -
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This is another video that makes good use of that grunt -
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As an aside, Louisiana has a language almost all it's own.
That type of thing was / is big in the deeper American South. Also the “Who got dem shine rim, who got dem shine shoe, who got dem shine grill" is the type of boast you'd hear down there. In the North, they've been trying to emulate old white people for at least 20+ years, so bragging about shiny shoes, teeth, etc..... would be seen as being stuck in 1985 or a backwoods "bama". In the North, you hear brands being mentioned, etc....., and it would be more nonchalant. In the West, they don't brag like that.
This is a decent video on black regular accents now by area -
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