You can't forget about the clitoris during sex. It contains about 8,000 sensitive nerve endings, making it a pleasure point indeed. In fact, one study estimated that women orgasm 61-70 percent of the time during "assisted intercourse" (meaning there was clitoral stimulation in addition to penetration involved), compared to 41-50 percent of the time during unassisted intercourse (meaning there was no clitoral stimulation during the penetration). Clearly, since many people with a vagina are unable to have an orgasm through just vaginal penetration, stimulation of the clit is the way to go if you want to reach that O you've been waiting for. Clitoral orgasms can be very powerful, so expect anywhere between three to 16 contractions to occur, and to last about 10 to 60 seconds.