How long does it take for a males to pre-ejaculate?
That varies from person to person and theres many guys that does
not pre-cum ( I believe) at all. And also how much and the amount
Varies with the person, about as soon as he gets an erection or even as he is getting one. It is there to lubricate during sex so it has to start before the sex does. Not everyone produces it and in different amounts. It will vary with one person depending on how stimulated they are each particular time.