I'm going to really badly insult someone because they wouldn't stop trying to put me below them
Why do you feel like you need to put them down because of that?
They are annoying and I know that they're inferior to me.
You should never have a superiority complex over others, nor insult them. They are a human with feelings too, and they deserve to be dealt with respect and dignity. No one should associate you if you only want to put yourself above others.
I'll laugh if I get the last word.
Don't you see how bad you feel because they're trying to put you down? If you try to put them down, then you'll be just as bad. If you really want to be superior, then you should rise above the situation and hold back your insults.