I experienced Tantra for the first time last night.  WOW!  What a rush.  If you've read anything about Tantra, you'll know it's not just about getting off.  It's about a full-body sexual experience.  
I learned about Goddess Worship (no S&M involved at all) and mens sacred spot massage.
During the Goddess worship, she controlled her multiple orgasms.  She had so many that while I was massaging her sacred spot it was literally runnind out of her and my finger was wetter than I had ever expeienced!  
During the sacred spot massage I went into an energy field that she transferred to me using her earth finger.  My entire body went numb with pins and needles.  I had no control over my arms and my hands were uselss.  My head was numb - everything except my eyes.  WHAT A RUSH!  She said not everyone experiences this every time, but I sure did.  Unbelievable.