Totally a random thought lol. So I calculated it.
I found I have about 100k sessions on my site per month, I assume say 25k or 1/4 get off on it, spending about 7 minutes on my site with a low bounce rate.
The average load is between 2ml and 6ml so i went with 3ml on the lower end.
The result is 75,000ML or /1000 = 75 litres of cum assuming they are all male and 1/4 of total users got off to my site.
Sorry about the Canadian spelling and sorry for this useless fact! Maybe you'll find an error in my data.
75 litres of cum

per month is a lot. But I bet some of you do way more haha.
It's perverted but totally something to wonder about when you're thinking of your user's experience. I hope they got off or this was all for nothing. ;)