I would say the average volume of semen for a 14 year old guy is about 5 to 10 ml. By that age, you've reached puberty and you can already produce great amount of semen when you ejaculate. I used to talk of this with my friends, and we were 13 or 14 years old. All of them had at least 6 to 10 spurts of semen per ejaculation and even if that seems high, I once had 13 or 14 spurts of semen, but most of the time I shoot 9 or 10 spurts. So the average is around 8-10 spurts for a 14 years old guy :)
drink a lot of beer and take a few Viagra
If he retrieved while ejaculating at the same time, yes there will be semen on the bed.
About 10-20 minutes.
well if your talking about when you get old then im not as sure ,but its probably because you aren't producing as much actual sperm, just the carrying fluid. Over masturbation can course it as well, as your body has used up the reserve in your body, as such it can no longer continue to produce cum with a normal concentration of sperm.
New semen is recreated all the time, so in a day or so after the last ejaculation the amount will be restored.
Increase
Increase of velocity over a period of time is called acceleration.
No here the semen will taste the same.Even after a long time.
Semen can survive on clothing for several hours to a few days, depending on factors such as temperature, humidity, and exposure to light. However, it is important to note that the viability of the semen decreases over time, and the likelihood of successful fertilization decreases as well.
Over Time, Aye.
inflation
Yes.