I think you mean a poker troll, someone who is constantly insulting or demeaning you or sending messages to make the table angry. Personally, I either turn off chat or switch to the poker stats tab so I never see these comments. Trying to take out an opponent just because they are being mean is not the way to handle this. That's exactly what they are hoping you do. They are hoping they can make you go allin when you do not have the best hand so they are at the advantage. Instead, wait until you think YOU have the better hand to try to put them allin.