He called you 'new' because your post count is four (4). He apparently wasn't into researching every thing he could to find out that you aren't 4 posts new. He called you 'new guy' because according to the information readily available to him, you appear to be a new guy.
And even though I totally agree with post #6, Ima call you an apparent asshole, because according to the information readily available to me, you appear to be an asshole.

to the Cellar, FNG.