I agree with Kimc, if you wrap right this probably shouldn’t happen. Of course when it does happen with me, it happens in dramatic fashion. This is one BIG blister. And it hurts like hell! I have been thinking about what I did differently that made this happen, and it could be a few things. First, I usually double wrap nice and tight(tape). However, since I started using the paper splint (mentioned above), I only used one layer, and I did not press it on very tight. That could be the issue. Or second, I used a lot more heat than I usually do. This may have cause my penis to perspire, causing the tape to weaken its hold. When I was done hanging the tape had slipped all the way up my shaft too. And third, I had just gone up in weight as well. However, I had been hanging at that weight (15lbs) for a couple of days. It could be one of these, or a combination of all of them. So what’s the moral of the story? Be as thorough as possible and take all the precautions. :-)