Ok, from my memory of reading through his crappy posts, I think you stimulate the bottom of the CCs, where the penis literally goes into the body. It's pretty deep down there in the ass area. You are supposed to meditate on the pleasure in this area, and not to focus on trigger areas (CS and glans, upper CC).
Just massage that area with two fingers, or a finger and thumb. You should feel hormones rush up your penis, it feels amazing, something I don't normally get during regular erections, feels like a kid again or something.
I really think that doing these can help lead to permanent growth from girth and length exercises. The problem is taking 30 minutes out of your day to do something with lesser known effects, whereas jelqing, etc, has been repeatedly proven.