An Old Lady vs. Embarrassed Driver

Joe told me a story yesterday about something that happened to him earlier. He was taking a walk while on a break at work and he had to stop at a crosswalk to let traffic pass. While he was waiting an elderly woman (he estimates as being in her 80's or 90's) walked up and also waited for the cars to pass and the walk signal to change. When it did, they both starting walking across the street. When they were almost to the other side a waiting car lurched forward just a bit. Apparently, the elderly woman began to scream (not mutter or yell, but scream) obcenities at the driver while flailing her arms in the air.
The driver was not the only one who was shocked. This little old lady, hunched and a slow-mover, was using some pretty rough language and was livid that the driver has "almost hit" her. Everyone around stopped and watched and the driver looked like he was about to pee himself (according to Joe). But what was Joe doing?! Trying his hardest not to begin laughing hysterically, worried that she would then turn on him.
This got me thinking about old age and how a-like it is to being young. It is what I would like to call the bell curve effect of life. When you are young you can and say anything that you think. No inhibitions or worries about others' feelings. Old age seems to have this same effect on the elderly. They don't care what they say or who they say it to.We also deal with these outbusts in the same way. We do one of two things when a child/older person says something we find rude or out of the ordinary. We either snicker as quietly as possible because we know we should not condone their actions, but it is just so cute we can't help it, or we give them a stern look and try to explain to them why what they said was wrong. Either way, they continue to say what they want.
I want to be that way when I'm older. I have spent a lot of my life not saying things, and I would like to think that someday, I will be able to say whatever I feel without a care in the world! I don't want to do this because I want to hurt people. I want to do it because I know that I can say exactly what I think, and my family and friends will just right it off as the words of a "crazy old lady".