Taoism and sex advice

[Annoynymous]

I have recently bumped into this video

Does these technique work? Does anyone have any experience on this? I am very interested in learning tantra. Any advise on this is welcomed

[tom rAy]

Check his book if you are interested. Called The  Multi-Orgasmic Man. What he talks  about there definitely works and it's worth learning, great techniques there. Basically you'll learn energy work through jerking off. The process of multiple orgasms itself and moving energy from the balls - this is real and useful and fun.  David Deida also  touches on the topic in his "The Way of the Superior Man". 
But I haven't tried to sharpen  the "knife" as he teaches here, can't say anything about that.   
Though I don't know how much of this teaching  is  related to tantra, never got deep into that topic.