i'm just curious. also i was wondering if this was part of a standard new york dialect or not. another thing i noticed i and other people around me sometimes do is say 'a' instead of 'an' as in, is that a airplane? the 'a' being pronounced 'uh'. but i figure that might just be an issue of speaking faster than i can think.
eta: i understand now leaving out the t in winter isn't a glottal stop (mom's don't know everything!). i'm gonna look up nasalization now.