Wow, I can see why that was upsetting!
Have you tried the technique where you think of three possible outcomes?
When you feel yourself getting into a situation like that, pretend for a minute in your imagination that you have magical control over the situation - that you can write what will happen next, like it was a script.
So, you would have started right after that couple of girls who hadn't been around in awhile showed up. (You can take a little break from the situation, obviously, to do this ... go to the bathroom?)
Do your threes:
1. What's the
worst thing that could happen? What would be the
worst outcome, the worst way it could go?
(You probably had no trouble with #1 ... it's probably what you did imagine, right?

)
2. Now, set #1 aside ... what's the
best possible outcome? The
best way the situation could go? Picture it happening.
3. Now put #2 aside ... what's a
third possibility, somewhere in between?
Neither the nightmare scenario,
nor the pie-in-the-sky scenario, but just a sort of mixed, not all good or all bad outcome?
Then you can "play" with all three scenarios, in your head ... which one is most likely? Least likely? What are some choices you have to handle each one?
Not only does this exercise help you think through a situation more clearly, but just doing it - the process - gets us out of our "emotional, reacting" brain and into our "thinking, planning" brain, which by itself can help us to calm down. And calming down usually gets better outcomes, right?
