This is likely the first time you have been asked this question but when I was in late puberty my testicles became soft (without structure) and I could feel the tubes that the sperm is produced in (like vermicelli). I believe that it only lasted about twelve hours because the next morning all seemed fine, my testicles were firm again. However it did scare me and some time later when a friend showed me the same thing I told him that it happened to me too. I had one other friend say that this happened to them. Perhaps because it happens over a brief time most guys don't notice. Did you experience this, can you explain to me what happened as I haven't found any answers on the web.