It is >> c u m << (aka squirt)
wait, not quite. Squirting can happen when a girl orgasms if she knows how to do it, but most girls don't squirt, even the ones that are lucky enough to have orgasms. If your girl is not a multi-orgasmic squirting porn star, don't feel bad, because a lot of that is learned behavior on the part of the woman. In fact, if you actually want that in a girl, then being able to nurture her emotions and fragile self-esteem within the context of a relationship is a more important skill than anything sexual. If she feels like she's in a romance novel, then she'll act like she's in a porno.