i full retracted yesterday in the shower, and i guessed id try to similate lips with my thumb and index finger to see how good a blowjob should feel... it it felt (good) yet so sensitive my legs lost strength and i fell 0.0 how am i supposed to reduce this? cuz at this rate.. my first time having sex aint gonna last 30 secs
The more contact you have with the glans, the less sensitive it will be.
one thing to keep in mind is that the inside of a vagina (or other body orifice for those so inclined) is lined with tissue that is a whole lot smoother and silkier than your hands. So, don't give it a thought unless it actually turns out that you shoot too fast when you get it for real. Then if the rapid fire penis problem persists I'd suggest a little wanking before each date; that should slow things down a little.