To add Science Facts™ into the squirting conversation: Most of the intense and heavy squirting you see in porn is actually urine, to make it appear more excessive than a natural female ejaculation really is. But the actual ejaculation from a vaginal orgasm is not urine, it’s more of a viscous fluid that sometimes builds up in the vagina enough to gush out when the muscles spasm during an orgasm. Though who cares what it is, it’s hot :D