Queue

It's about 7 months ago, I got from my uncle, happened in a famous huge shopping centre in Singapore, maybe less than 1 minute..

It's such a long queue in an afternoon at the cashier. A man at most front of the queue was about to put his shopping goods on the cashier table for payment. Suddenly an old lady came to the cashier and put her shopping cart on the cashier table and stood there waiting for the cashier to process payment. The cashier then told the old lady to queue first and she replied that she's on hurry and had no time for queuing. Maybe the cashier was afraid to refuse and put the old lady in anger, hence said, "If the man behind you give a permission for you to proceed, than it's fine, otherwise you still have to queue no matter what." She really asked the man but the man quickly answered, "If you asked me before, I would have replied yes."

I don't feel it's important anymore to ask my uncle what happened next.