Has anybody tried the technique described in the GSpot thread. It consists of spanking then switching to GSpot orgasms then spanks then back to orgasms. The woman over your knee with her legs apart is a perfect position for inserting ones thumb (as described in that thread) and using moderate force to G her to multiples. Throwing a good spanking into the mix will have her gurgling and screaming. It is fun to switch back and forth quickly so she doesn't know what's cuming next. The only problem is it is SO intense that this kind of play can only last 10 or 15 minutes before she is mush - completely exhausted or has passed out.