I found this on an other forum, the author is Surfnitup (Ballooning and multi-orgasming)
I have been ballooning every time I have any sexual activity. I really concentrate on filling out the part of my penis that is inside me-between my anus and the exterior penis-really pumping it and at the same time contracting my prostate (this feels really good). It really stretches the ligs out and makes my penis about 1/4" longer. I constantly flex my pc during any sexual activity, pushing more blood in and physically moving my penis quite a bit........I think having a very strong pc both aerobically and fast-twitch anaerobic is important. I don't know if it makes the penis bigger in the long run but it gives you that super erection you always want, and I can really feel the pleasure all the way back to my anus and prostate.
its a sack of shit in my eyes.
I mentioned all this at PP ages back, from Dr Lin's site, DARE I SAY MORE.
Its all in squeezing the ROOT of the penis, apparently squeezing it at certain erections baloons it, I tried it and nuthing.
It might work? but My instinct is its a poor mans and VERY poor mans, version of Edging - stick to that , I am.