Slayer4U said:what does that mean actuallly? how to get pregnant thru pre-ejaculation?
Sperm from a previous ejaculation may have stayed inside the penis, which is caught by the pre-ejaculation as it comes out (by the way, most men cannot feel the pre-ejac coming out). Pre-ejaculation itself is meant to clean out the inner penis tract (I forget the name of it exactly) before the actual semen comes.
Never let anyone risk it. Men should always wear a condom (unless, of course, getting pregnant IS the goal).