As a stroke survivor I can understand where your father is coming from... a stroke can alter or turn off your ability to censor yourself. It's like it just goes away. You can no longer censor... you can try but it is very hard work to do... more so then you would think. Since I was under 40 when I had my stroke I have been taught to try to censor but it is still very difficult. For your dad it may be impossible to relearn to censor. Just tell everyone to not take what he says personally... he really does not mean to speak what he knows will hurt.
