Relax. If you are playing multiplayer, the player won't see this. They won't be able to see this post because they are in a multiplayer session and not on the website. Just leave the multiplayer session. When people do stupid stuff to others, they do it for the reaction. So you are giving them a reason to do stupid stuff. Just leave the multiplayer session.

LOL, reminds me of Mike Dikta's segment on Monday Night Countdown. They'd make fun of him and he'd say "STOP IT!"