[Luci]

why do sum shoot more sperm than others...?

[jns]

Amount of liquid in their body, how long ago they ejaculated, blood pressure, level of excitement, testosterone levels, and a whole lot of hormones and the levels of those hormones.

[Hugo-B]

I used to be able to ejaculate a lot further and release much more semen when I was in my teens than I can now; and x2 on what JNS says.

If you're wondering whether the volume of semen produced when a man ejaculates is directly proportional to the intensity of the orgasm the answer is yes and no LOL.

A man can actually orgasm without ejaculating, I know this is a fact because I've done it, if you're interested in doing any of them with your BF read a book called the 'multi orgasmic couple'.

Regarding the volume of semen relative to the intensity of the orgasm all of the factors which JNS mentioned to affect the volume of semen irrespective of how intense the orgasm is. I remember having sex with a girl once and when I was about to cum she kneeled on the floor for me pushing her boobs together like a porn star, I was dying to cum and stood there masturbating over her thinking I was a porn star, when I came, I came so much I really let myself go and groaned really loudly with pleasure, but when I looked down only a few drops came out, I was SO embarrassed! It felt like LOADS was coming out, she didn't say anything but I think we were both expecting a bit more 'volume' LOL.