When I masturbate I like to take my time and edge, that is to delay orgasm for as long as possible. I have been stroking my cock and looking at porn or reading stories of women masturbating for about three hours now and my cock and balls are engorged.
Before a 'workout' I make sure my balls and shaft are shaved. When I am some way into my routine I notice that my balls become loose and heavy. I gently tug on them and I believe this makes them become even more swollen. I also like to see them bouncing up and down when I tug my cock.
I am now mega turned on and plan to stop for a short while. I will put some loose fitting trousers on and no matter what I do I will feel my balls hanging loose and heavy. I will be in an almost constant state of arousal and will think about my impending release.
When I decide to cum I plan on folding my legs underneath me and leaning back. Making my cock strain and stand to attention. I will try and get a mirror positioned so I can see the explosion. I know from past experience that when I cum my cock will jerk out lots of sperm. Part of the turn on is savouring the moments before ejaculation.