Sandra, the nerve endings in your nipples are connected to the same pleasure center in your brain that your clit is. Men can also be sexually aroused by having their nipples licked. It's a great sensation but for the best orgasm ever what I recommend you do is sit on your lover reverse cowgirl and get someone else either male or female to lick your clit simultaneously while riding the nice hard cock. If you haven't tried it, you should. It will literally blow your ... well, let's say mind!