"Don't insult yourself. I will ship the pants back to the address you shipped them from, thanks.
On another note:
Making ignorant comments speaks very highly of your intelligence level.
You seem to not have grasped the concept of cleanliness. New means clean as well as being never worn or used. Once you try the pants on then they become used. Just like buying a new car, once you drive it off the lot it becomes a used car. Rubbing the pants on the ground making them dirty does not help your selling point of the item. (Ralph Lauren sells itself). Next time try keeping the merchandise stored in clean dry place therefore you would not have to go though issues like this. Furthermore you should try a bit of honesty in your auction by simply stating that the item has dirt marks and dirty scrapes. New with tags is new tags plural meaning more than one. Yours should read more like used with tag. Nevertheless in your feeble childlike mind you most likely do not understand what has happened."
I mean isn't it his fault for not being familiar with the style of the pants?
Make disclaimer on everything next time, you came across all sorts of buyer/seller..., and of course you know whom to black list...