Wait, you mean the ToS in all online games and such treats things like bullies in schools, where if you dare react in certain ways you get punished instead of the bad person/people?
But honestly, just set yourself to /busy and do something by yourself that won't get you to react like that.
If you're getting heated, remove yourself right away from what's making you heated. Sure, they started something to get you heated, but you probably ended up making things worse by giving in to them, when they might have wanted that to happen.
It's a two way street. Look both ways before crossing, then be on your way. Silently if you have to.