Stop And Go

Get some lube, and begin to masturbate in your favorite position - but right before you ejaculate, STOP! Put your hands down, or put them behind your head, so you don't ejaculate. Let your erection get just a little soft, and then start again, and once again, right before you ejaculate, STOP. If you do this at least four times, not only will it prolong your session greatly, it will make you ejaculate a lot more semen.