I was able to make an educated guess as to why I acted as I did. You may not know, nor may your sons be able to tell you what is going on. They may give you clues that you may or may not be able to read, understand and react to. We may not know where the outward behavior comes from, but we can make educated guesses. And please don't let the behavior psychologist tell you it is all intentional.
Most behavior is a reaction, whether conscious or unconscious.
At that moment probably not. It was a great emotional release to slam the phone down. Maybe if the stress continued and I didn't recognize the source. One of the ways to prevent meltdown is to change the environment when possible. Other possible causes that may be connected to meltdowns include fatigue, hunger and thirst.