I've been stroking for a while and I just looked at my hand and it was full of precum. It's amazing how much precum I can produce. Sounds like there are others like that.
If I’m hard or stroking for a long time, it’s starts collecting under the foreskin. Eventually it starts leaking, so I’d say it’s probably at least a tablespoon amount although I’ve never measured before.
Used to have lots early on, or just like that when aroused. Guys know it was often and easily lol. Now, it takes longer and not as much as in younger years. But there had been a recent time when I had quite a generous amount when I had the luck to have someone to share the fun with