In one of our supermarkets (again!) the other day buying my basic items such as bread, milk, eggs etc. when another gentleman joined the queue and I could see two women ahead of us with overflowing trollies so I thought; here we go again waiting forever, but it turned out to be quite fortunate, because he was more than keen to chat about his hobby keeping fish; the indoor exotic aquarium type as well as the pond in the back garden. We had loads of time to go into in-depth details. I'm an excellent listener, just knowing when to ask a question or make a comment to encourage more chat. I learnt more about fish hobbies from him than I ever would, listening to a teacher droning on and on!
And the best part was that as the queue cleared the check-out he said "thanks, it was nice talking to you!" It gladdens my heart!