Upside down spaceman

A helmet of some sort must be worn during the entire process, and the male must be upside down swinging from the ceiling on chains. To make the experience even better, other equipment may be used, such as knives and whips. Water can be used for additional lubrication.

Jack: We need to spice up our sex life.

Lisa: How about the Upside down spaceman? I heard about it from Joanna up the road.