While reading the script of this celebrated movie:
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[Lovers]


                             

                               SAILOR
                You have such a pretty, long neck,
                like a swan.

                                LULA
                Grandmama Pace had a long, smooth
                white neck.  It was like on a
                statue it was so white?

David Lynch, Wild at Heart (script)
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I found that many of Lula's sentences end with an unexpected (for me) question mark. 

 

Peter T. Daniels and Jerry Friedman of alt.usage.english newsgroup of Usenet kindly  pointed to me this is "uptalk."

Is any of you using it in your writing? Just curious:-)