Because you're giving and receiving pleasure at the same time, some claim a 69er is the ultimate erotic sensation. Others find them to be ultimately frustrating: It's all too easy to get lazy on your end! If your partner's working his magic and you're about to climax, it's common to forget about his pleasure and try to get away with a few lackluster licks. That's why many people try 69ers in their youth and then decide they're too much work. Big mistake, ladies: They're a great way to add naughtiness and variety to a stale sex life, and with a few simple adjustments, they're easy to master. Here, the ups and downs of head-to-toe sex -- and how to make yours better!