Trolls are basically the bread and butter of the internet. Most of the time, we love to laugh at their antics. Unless, of course, you're the butt of the joke. In which case, things become more embarrassing than entertaining.
It's the circle of life online. One day, you may have a laugh at someone else's expense, and the next, you may be the one getting roasted. Unless it crosses over into the realm of bullying, my best advice would be to laugh it off.
Don't let people laugh at you — make them laugh with you. That's the best and only way I know how to handle the troll. Take my advice or you'll live a life of pure bitterness. The choice is yours.