No, I haven't hit the septuagenarian stage yet but I only have a few more years of donating plasma before they show me the door.

One thing I have heard about is that people with dementia can remember songs from their youth and listening to those songs can light up their faces with joy.

If you are looking for some elderly humour, try the Aunty Acid cartoons. Do an image search on Google and there are hundreds of images.