Load up on zinc...as much as you can handle with in reason. Also, drink a bunch of pineapple juice starting today...and all the way until tomorrow night.
Then, here is the kicker.....about 1 hour before you want to cum or before having sex....jack off right up till you are gonna cum...then STOP...dont cum......then go to work on your girl or whatever.....i guarantee that you will blast ten times more than usual and it will taste REAL sweet!!!
kronkette