5 The Upside Down Cake

For the brave and flexible only: Arrange yourself up against the bed so that your shoulders are on the floor, your butt's leaning against the mattress and your legs are bent back over your head. He comes in from the top, upside down from the usual entry pattern. Tuck your chin into your chest and obey all local safety regulations.

Jill Hamilton writes the blog In Bed With Married Women. Follow her on Twitter.