>>11854748First you gotta jerk off a lot. I mean a lot alot. Like 10-15 times in a day. Once you can just jerk off for like 9 hours straight no break and your hand hurts you know you've got it.
Then it's just a matter of figuring out how to get out the different kinds of nuts on your own. The possibility of a 5 minute or even shorter quickie session is ever present but we want it to last longer. Become a master of both sides. Train in quickshooting and marathoning.
Also....being really really really really REEEEEEEEEEALLY horny all the time and keeping yourself essentially redlined helps a lot. Become like that meme shit tantric or however it goes.