I'm a swimmer. Not a competitve one, but one who enjoys getting in the water for 30-45 minutes each morning to center myself and begin the day. I usually swim between 6:30 and 7:30 am. It's a busy pool at that time, and I often run into "unlikely teacher" lane partners--which I've written about in the past.
I've been swimming at my pool for almost 40 years (since it opened), and I can get territorial. I have a favorite lane, which I think of as "my lane" (I know, I'm not proud of this, just telling it like it is). And I think new members should familiarize themselves with pool rules about circle swimming, showering, and the lanes designated for faster swimmers, leisure swimmers and so on. So I see myself as an elder at my pool, if you will, and do my best to respectfully enforce some of the etiquette. But today I received a well-timed and delivered etiquette lesson from Sam (not his real name), who didn't even know he was teaching.