I have the feeling that you are looking for prolonging that actual ejaculation process - do you want to produce more semen? As one of my colleagues suggests, absitnence will 'build up' a certain level or ejaculate, but don;t imagine that a week's 'store' will give you seven times the volume, it doesn't work that way! If you are inhibited by the adult performances of people like Peter North and Ron Jeremy, don;t be, they are very much the exception in terms of volume. The average ejaculate is a standard amount, issued for a standard time, so don't worry about it. if your partner is worried about it, she's too shallow to be spending intimate time with - move on!