It's fake
To the point about the video, it's fake...
mmmkay. Seen it before. Look at the color of the 'dick'.....unless it's attached to a dead guy, it's just plain wrong.
The timing between the squirts is way off too...I couldn't find the exact number, but I know I read that Masters and Johnson indicated it was on less than a 2 second wave (contraction) cycle of varying duration; Peter North, for example, has the same sub-two second contractions as you but his ejaculatory duration is about a week long and his ejaculate volume is about 1.5 gallons (I'm exaggerating). Lucky bastard.
As always, genetics does play a factor too. Some people havce great pecs, some people shoot huge loads. If you're lucky, you do both.
Here's some research excerpts (links below):
William Masters and Virginia Johnson, prominent sex researchers and therapists, suggested that there are four identifiable phases in the sex response cycle: excitement, plateau, orgasm, and resolution.
The peak of sexual excitement is reached during the third phase. Involuntary muscle contractions, heightened blood pressure and heart rate, rapid intake of oxygen, sphincter muscle contraction, spasms of the carpopedel muscles in the feet (funny...ever notice the toe curling?), and sudden forceful release of sexual tension characterize the orgasmic phase.
For women, orgasm also consists of rhythmic muscle contractions, in this case of the uterus,
at about the same pace as in men. Tightening of the woman's muscles puts pressure on the man's penis and assists in male orgasm.
As far as shooting bigger loads, yes, it's possible. No magic pills; just good food, just lots of fluids and hang back on the crank yankin' for a day or two.
And don't forget the work on the muscles involved for increasing your...uhhh...range. I have done the excercises since I was a teenager, and if I pull out before I cum in the missionary position, I can shoot all the way up onto the pillow next to her face, or hit her chin/face...from down there. Doggy style, I can pull out and hit her in the back of the head (done it on accident). Timing is a critical part of this.
Here's the references:
http://health.discovery.com/centers/sex/sexpedia/sexresponse_02.html
http://www.jackinworld.com/library/index.html (for the fellas)
http://www.the-clitoris.com/ (for the ladies)