Sexual Position #8: Deep Factor

The deep factor is a great position to get in after you're all warmed up. It will give you very deep penetration that you can control by moving her legs closer to her body for more. Start in basic missionary with slow thrusting, as she gets into it, pick up the pace, then when she's screaming in orgasmic bliss, get to your knees and put her feet near your shoulders. Next grab hold of her knees and push them down towards her. Slow your thrusting, start shallow, and pay attention. (Going too deep too early, could hurt her.) Test the waters going a little deeper each time, until she can't take it any more, than back off and repeat again ;)