Barely into my 20s, I experimented with solo masturbation. Meaning, I was already well-versed in jacking off, but…was there another way? One night, under cover of darkness (ha) I tried something new. I noticed when I jacked off, something "inside" would tighten. This, together with "rubbing" would produce the desired result. So, I figured, how about if I just "tightened"; no rubbing? It took a while, but paid off in a most sublime climax, lengthy and…peculiar. Delightful. It seemed to...