I got fired from my job at a bank. An old lady came in and asked me to check her balance.  So I pushed her over.
I find that to be a very disconcerting story. Do you really want to hurt elderly people?
They fall over since they don't check their own balance. They are old and I can push them over if I want to. I'm not saying this hurts them but at least it makes me feel better and punishes them a bit.
Elderly people should be treated with respect and it isn't right to joke about hurting them since they are in a vulnerable physical state. Why not actually get to know a few elderly people and hear more about their lives? If you knew what they have experienced in the past, it would make them more relatable to you and you would no longer want to wish them harm.