Ive had a lot of girls squirt, but it has never been anything like porn movies. Not that Ive kept a step-by-step journal, but... It generally happens after at least one orgasm. I tend to use a repetitive stroke thats 1/2 to 3/4 length for (guessing) about 10mins+ -- kissing and light dirty talk are a definite. When I feel shes ready to have an orgasm, (based on her body relaxing and opening up so I can go deep and her noises), Ill push all the way in and go into the deep spot, (Im assuming its the posterior Fornix), at that time, Ill stay there and rock my hips while pushing against her back wall. I have to generally shift my focus so I dont cum; that spot is insane! More times than not, she will have a different type of orgasm after a few seconds to a minute or two of me being deep. You can hear the squishing and feel the fluid around my cock. Obviously, some liquid comes out as evidenced by the sheets, but its not spraying or gushing.