I once had an extremely funny interaction with a nice man at one of our local sites. He came up saying his buddy was a no-show, and asking if he could dive with us. We said yes, and I gave him a little information about who I was and what my diving experience was (I think I had about 150 dives at that point, in a year and a half).
He proceeded, in a very gentle and kind manner, to explain to me that the fins I was using were very old fins, and I would be much happier with more modern, split ones; he also told me he found it hard to believe that I had over 100 dives and hadn't started using a pony bottle yet. I just smiled and thanked him for his input. We went diving. He went home. I have not seen him again.
He proceeded, in a very gentle and kind manner, to explain to me that the fins I was using were very old fins, and I would be much happier with more modern, split ones; he also told me he found it hard to believe that I had over 100 dives and hadn't started using a pony bottle yet. I just smiled and thanked him for his input. We went diving. He went home. I have not seen him again.