You know you're from Indiana if . . .|
Example: "Where's my coat at? or "If you go to the mall I wanna go with." [Doesn't everyone do this?]
Okay, I might say "Where's my coat at" but I don't say say "...go with." Buth I think the "go with" example is a bad example of the statement. It doesn't so much end with an unnecessary preposition as drop the object of the preposition, I think.
To me it seems like it's a shortened form of "go with you" (in this specific example), or "go with me" in other uses. I've heard people say it, but not often, and R and I recently discussed this phrase when we heard it in some episodes of Buffy--we both find it a bit jarring and find ourselves doing this "wait for the end of the sentence" thing. Neither of us grew up hearing this phrase or saying it.
Ur. Might be the phrase actually discussed was "wanna come with" instead of "wanna come with me." Same concept though.