Talking to my gf about past partners, she brought up that she was with a guy who produced lots of precum, which apparently was a huge turnon for her. I, on the other hand, produce none at all. I can jack for an hour and not have a drop come out. I was curious as to the variations in precum. Is it more common for men to have it than to not? Does it just come out a little at the beginning of foreplay, oozes out on it's own simply from an erection, or is it something that flows freely with every stroke up until ejaculation?