Trolls and Griefers are an intrinsic part of the internet now. Don't be intent on matching them wit for wit. Because there is none. There is no real accountability on the internet for the most part, and unless you happen to be a prolific hacker it is unlikely that you will ever be able to sufficiently humble people in their hubris. Rather, take this moment to reflect on your own reactions to these nay sayers and crap slingers, and then ask yourself, "Should I care enough to react negatively?". Apathy and indifference can be great shields in the face of scathing barbarity and crude language.

If something upsets you, don't reply back immediately in the heat of impassioned defensiveness. Rather wait for your reasoning and good senses to catch up with the transparent attempt puncturing your dignity, and then sweep away their crass comments with either well placed replies or just leave them to their own devices. They don't really win anything from you withdrawing even if they think they've earned some sort of imagined and childish victory.

Remember that you never wrestle with pigs. You get dirty and they enjoy it.