hey, dable_wi -- Your experience with the masseur pressing his 'rock hard' penis against your hand and upper arm brings to mind "been there, done that", for me in a couple of situations.
In the first few years of my marriage, I was in a car wreck late one evening. Although the accident wasn't serious, I was taken to emergency. It happened to be the evening before a holiday and the medics on duty were celebrating early with a 'get-together' in the adjoining room where I had been deposited on a metal table for examination.
On my back with my hands on each side of the table, I could hear their music playing and their talking and laughing before a young intern came to check me. He was a really attractive dude, in fact I recall thinking I had never seen anyone as handsome as he.
In his scrubs during the examination, I felt his penis which I'm sure had no underwear restraining it in the loose pants, as he pressed it against the back of my right hand. I expected him to immediately back off, but he kept it there with just slight moves back and forth across my hand. I moved my hand enough to know his dick was in an erected state. This made me wonder if he had had some alcohol in the other room and had gotten horny.
The second experience similar to this was when a masseur did the same against the back of my right hand and continued to press his woodie against my lower and upper arm as he worked on my abs and pecs. During all of this we were talking about my friend who had recommended him to me for a massage. He was telling me about what a good physique Edward had and how he had enjoyed massaging his hard body. Edward had told me that I could expect more than just the usual professional massaging, so . . . . .