This is phenomenal and I suspect some kind of fake. I have heard some guys will introduce synthetic "cum" - some mix of egg albumen and other things perhaps into their bladder by a catheta. Then pee it out , ciontrolling the kegels in such a way as to stop the flow and make it spasmodic as if it were a real ejaculation. Any one else know any more about this?
I did once know a guy who regularly ejaculated over 30 mls at a time . several times a day. he had huge balls and was very highly sexed. Average cum volume is 3 - 7 mls I believe so he was pretty amazing.