Or maybe you want more information on how to make it pleasurable and safe? During vaginal sex also known as penetrative vaginal sex, vaginal intercourse, sexual intercourse and just sex the penis goes into the vagina. There is no one right way of having vaginal sex, but there are a few things that you should think about before you do it. Asking your partner and continuing to communicate as you progress is the best way to make sure you have their consent. It should also help make the experience more pleasurable for you both.