The ejaculate volume of most males lies in the range 1 - 6ml, the average figure being 3ml (a 'teaspoonful'); figures outwith the limit of 10ml are brought about by prolonged sexual abstinence, or are attributable only to freaks of nature like Pete North.
There's not much you can do to increase semen volume, as this is entirely dependant on the size and activity of your seminary vesicles. You produce what you produce, end of.
However, sperm count CAN be enhanced, enriching and concentrating the seminal fluid with tadpoles. One very simple way of doing this- eat more chicken! Oysters help too, as they are rich in an amino acid I can't remember the name of. Bodily Fluids was part of my degree, and there was a bit of banter on the raw eggs phenomenon: they make little difference; a myth, perhaps.
Thus, FsON like Mr North have the best of both worlds: large, highly active seminary glands and a high sperm count- the guy could accidentally cocoon an unsuspecting actress!
I noticed in one of Sandie's films and, indeed, in several of John Thompson's GGG movies, that the some of the cum was extremely gloopy- the girls were spitting and it was coming out in LUMPS, a bit like milky porridge or rice pudding- most unusual. Maybe the result of a 10-time snowball, or [correct me if I'm wrong, Sandie, I'm just speculating here, I wouldn't undermine your fine films

] possibly even 'stunt-cum'?
I've harped on a bit here, I know- but a wee bit of bucket science here. Apply it to yourselves. This example is applies to myself.
Say I have masturbated an average of twice a day since I have been sexually active, average ejac 5ml. Per year: (2 x 5) x 365 = 3650ml.
Sexually active: 14 years. => 14 x 3650 = total: 51100ml.
1000ml in a litre, total = 51.1 litres!!!!!
Into a visualisable context:
in terms of 2L Coca Cola bottles: 25.5 BIG Coca Cola bottles!!!
An aquarium full of spunk!! A small paddling pool full of jizz!
I didn't realise how much a man produced. One guy could probably fertilise the universe over a 10-year period.
End of funky spunk chat from me.