This is an exercise in submissive obedience and cock control for which you'll need two things: regular lube and desensitizing lube (any kind of lube with Benzocaine like AnalEze or Stay-Hard). With just these two kinds of lube and your hand, you're going to jerk it MY way. You'll need to follow each instruction carefully as I have you STROKE and EDGE for me, over and over, until I am certain that your cock has been properly trained. Will I let you cum? Will you be able to cum after all that stopping and starting?