In M&S yesterday, queuing at the basket checkout. The woman in front of me put down her basket and walked off. Didn't say anything. The queue moved forward and I walked around her basket to the front of the queue. A voice behind me said "I'm back." so I turned around and looked at her. "And I'm in a frightful hurry." she said. So I looked all innocent and said, "So what do you mean?" "I was here before you." she said. "Oh, I see" I said, "do you want to go in front of me?". I waved her forward and then it popped out... "A 'please' wouldn't go amiss." She looked blankly at me.
I know it's impolite to point out others' rudeness, but I just couldn't help myself. Would you have done the same?