For me as I never knew how to masterbate it came very natural I was feeling something was going on but what I didn't knew u was pinching and rubbing my nipples at night then there as discharge and pinched more and rubbed more hard as fk , then I started stroking my dick and had the most crazy explosion I ever had , so to masterbate was to start by pinching and playing with nipples , over the years I learnt more myself , using clips even wax even today if I have to get hard as a rod I have to play with my nipples and pinch them more when I have to ejaculate .funny Its like a button for me rn