I it sounds more pleasant (IMO) to say "this boat don't float" than "this boat doesn't float". I could easily see someone in the US saying "this boat don't flo

I it sounds more pleasant (IMO) to say "this boat don't float" than "this boat doesn't float". I could easily see someone in the US saying "this boat don't float", and believing they were being witty, or even just thinking it was the right way to say it.