Something We Should All Do

Don't anyone dare to say what a nice guy I am......Please don't that is not why I post the following

I was a few minutes early for work  so called into sainsbury's for some dog food on the way.
Of course I treated myself to a sneaky chocolate eclair ( I know, I know) but night shift brings the devil out in a person.
The self service tills were busy and as I and a few others waited in line we watched as a tall, slightly unkempt guy tried to use his debt card to pay for a two litre bottle of coke.
The supervisor was polite and went over to speed the proceedings up, but was forced to explain that his card was some sort of social services payment card which was not valid in the store machines.
The customer began to get slightly irate and it was evident that he perhaps suffered from some mental health issues.
" I need  my coke" he stated somewhat forcefully and as the supervisor gently suggested he use some cash I could see that the store security guard was moving in to help.
I went to the next free self service till and by the time I was finished the supervisor was trying to exlain to the customer that he couldn't use a euro to pay for his drink.
The manager was called and more explainations ensued and I left slightly ashamed that I had witnessed a guy on his uppers.
The queue, like most British queues had remained unseeing.
As I drove out of the car park, I noticed the man sitting with his face in his hands in the store foyer. He had no coat and it had started to hail stone,so on impluse I stoped the car in a disabled bay, hurried into the store and took the bottle of coke which had been taken from the guy and left on the supervisor's table. I paid for it at the self sevice till and smiled at the supervisor with a it's not your fault look before giving it to the man on the bench.
" Enjoy it mate" I told the customer who took the bottle gratefully.

And on the way to work, that eclair never tasted so sweet!