By “bigger” ejaculations do you mean more semen or shooting stronger, farther, vs a flowing or oozing? I haven’t noticed a difference so much in relation to size of cock, but I definitely have in correlation to size of testicles.
I have definitely noticed that smaller testicles generally ejaculate more semen that larger testicles. One would think if there be any relation it would be the opposite, that larger testicles would produce more semen. I had noticed it over time, so then I made it a point to take notice, especially when a partner had smaller or small testicles. Sure enough, there was more semen pumped out of the guy.Jackson