Trolling? It sounds moar like butthurt excused as trolling.
But seriously, I would have said something on the lines that, "Oh don't flatter yourself, I'm probably the only guy in existence who's even noticed you and it wasn't for good reasons. I mean damn, You are fugly judging from your facebook photos. A guy would have to knock you out and put a paper bag over your head to even want to look at you, let alone fuck you lol."