Great sex is all about spontaneity and exploration—assuming, of course, you have her consent. B ut there are a few parts of her body you shouldn't touch willy-nilly. Here are four such spots you're better off avoiding. 1. Her cervix. If you reach her cervix during sex, recognize that something is wrong. Remember, this is the narrow canal that connects the vagina to the uterus —where babies grow. That isn’t a place you want to go, so don’t knock on the door. For starters, it’s painful for her to have something rammed against her cervix, and it could be a sign that you need to shift for a position with shallower penetration. But it could also mean that she isn’t warmed up enough. Her uterus will actually “lift” upwards when she’s sexually aroused, making her vaginal cavity a few inches deeper than when she isn’t turned on. So don’t skimp on foreplay, and don't service her cervix. 2. The head of her clitoris. This might seem counterintuitive, but the clitoris—which...