I posted on this topic a year or so ago when someone asked about tantrics.
I did a course in LA a few years ago now that included the tantric hocus pocus stuff, but I gotta say the "edging" that she did combined with the prostate "sacred spot" massage was killer. Kept me on the edge for a long time with the build up and when she finally let me come, damn I did die, I think all my body fluids came out at once.