Today my wife and inlaws went for breakfast. My veteran father in law has the beginning of alzheimers and I was kicked in the shin today by my wife as she didn't recognize the glare I was giving an older couple at the next table. They were turned around laughing at my father in law as he was doing a weird unknown thing by spreading ketchup on his toast. After my wife realized why I was so "issed off", she said I should have said something. What would have been the polite thing to say to that couple??
Why were they even looking at what he was doing? Spreading Ketchup on toast isn't something so weird that it should attract attention from others.
My take on the situation:
The people watching and laughing are jackasses and they should learn to mind their own business.
Staring and laughing at others who are having trouble doing things because of a disease, handicap or disability is cruel.
There is a special place in Hell for those who do things like that, and karma is a bitch, what you do to others gets done to you.
Honestly, there is nothing nice or non-confrontational to say to the couple and when that is the case it is better to say nothing to them instead of causing a bigger scene.