I think yours is quite funny as well but I have a warped sense of humour at times.
However in mine Mrs M was an 80 year old lady I had known since her son and I started school together age 5 and we are now in our 50s, so I had a lot of affection for. She wasn't quite in the Ronnie Biggs mode...
This quote reminds me of a story of the mother of a friend of mine when she began to get dementia, when she was getting old and was forgetting things and acting erratically. So I went to visit her when I went back home to visit family. Conversation went like this
How are you Mrs M ? -...