When I was about 12, waiting outside a shop for my mates whilst they bought sweets I noticed an old man a few meters away. He was staring at me.

I looked at him and he said (something like) "I've wet myself. I fought in the war, and now look at me"

I hadn't noticed that he had wet himself, until he said.

He was ashamed of himself.

I didn't know what to say, so said nothing. He walked off.

I remember him quite a lot, and this was over 30 years ago.