I've met many grammatical exceptions in English so far such as I don't wanna do nothing at all.(I don't wanna do anything at all), I ain't go nowhere.(I don't go anywhere.)
So I just want to know is there any exceptional usage of either in the way like I wrote in my first post and
I know GG. When I first started to study English, I had totally no idea what negative + negative = negative sentense(especially the one paired with ain't) actually means. I once even quit studying because of it. Certainly that gets me even suspicious about informal grammar as a whole.