I went swimming this morning to put in my routine 60 lengths. Needless to say, all that time spent just swimming up & down tends to get a bit monotonous, and the mind tends to drift somewhat, and I started to wonder how much it would take to fill the pool with cum, so I did some calculations. I checked online & found that the approximate world population above the age of 14 was about 2,500,000,000. Given that each one of these ejaculates (be it by way of masturbation or actual sex) on average of, say 5 times a week, I worked out that in just 1 week there would be sufficient semen ejaculated to fill 15, 000 typical 25m swimming pools. Totally useless piece of information, but food for thought.
When I'm swimming, I try to think of only pleasant things, so, that thought never crossed my mind. Well, whatever works for you.