Be mindful that "negging" is not an effective way to attract a woman. It's belittling and foolish to ever assume that such abrupt behavior and words will ever be acceptable to a lady.
Low-grade insults meant to undermine the self-confidence of a woman so she might be more vulnerable to your advances. This is something no decent guy would do. (http://www.urbandictionary.com/define.php?term=Negging)