I love the Hitachi-launch image! Those things have the same effect on me if placed anywhere on my body. A friend introduced me to sex clubs a few years ago, as well as to the concept of the "light gaze". One of the best parts of group situations (likely larger than your hitachi situation) is the visuals. Looking around a room and taking in all the scenes/vignettes being created in various pockets of activity. Learning the "light gaze" technique let's everyone feel like no one is staring and yet allows one to take everything in.