There seems to a missing element in most of your understandings of how to do this. The testes can't drop back out of the belly if there is no place for them to go. You have to effectively eliminate the scrotal sac. The way to do that is to pull the right edge and the left edge up and over the penile shaft, so they meet each other, 180 degrees from where they started. You can then put a piece of cloth medical tape over the top of the shaft, to hold the two edges of the sac together, and then a loop of tape around the whole thing to hold the first piece of tape in place. You then pull the penis forward, which causes it to lengthen, but lose girth, and fold it back into the ass-crack. I don't use tape anymore, just control-top panties such as Nancy Ganz 446 Tumm-ee Brief Panties or Body Wrap 44810 Panty Brief Panties. For sizing, since we don't have wide hips, add 15% to the weight recommendations for size. So, since the mediums say they are good up to 140 pounds, they are really good up to over 160.