I'd rarely had the opportunity to study Dan up so close and NEVER with his pants down! I was thrilled. I tried not to show how thrilled. I think it would have frightened him.
The nearest to this - one evening in summer the two horses he was boarding on his property got loose. We knew more about how to get their attention and "bring them home" than he did so we got out and helped. What a reward I got for my trouble! He and his wife came and talked in the starlit evening with us.
The light was perfect. I could make out every feature but at the same time he could not necessarily be sure just where my eyes were directed, nor could my wife! It was a little like being invisible.
Dan was dressed in super-tight jeans and a t-shirt. The white t-shirt was the most visible item. For the first time, I had noticed the slope, the sweet curve of his belly. No, he did not have abs of steel, just a fine relaxed male mid-section. And I could just barely make out an inviting swell at the bottom of the zipper of his jeans. Until they turned to walk home, I could NOT get a good look at his butt (most interest there of course!) but THEN indeed I did. Just stood and stared as it flexed itself gradually into the darker distance.
Ah but now, here in his workshop....well, as I said we became accomplices. My eyes darted around for what we would need, some way to display his buttocks to best advantage and something to spank him with.
I kept looking back into his face - his flushed hungry face - and every time I did, our eyes would lock for a second and I swear my _c_o_c_k_ stiffened a bit more each time.
Finally - I decided I'd better take charge.
"Ok, son," I said to him. "Get up on the workbench here, on your belly, with your butt at the edge."
The workbench was mounted on two sawhorses which placed it higher than an ordinary table, high enough that lying across it would take him clear off his feet.
He struggled to pull himself up. Feeling very fatherly towards him now - well, _s_e_x_ual but fatherly - I hoped he would not get a splinter on his fine belly from the rough wood, through the white shirt. Finally he was positioned there. As I had hoped, his butt was in position for a close look, a good feel and an excellent hard spanking.
The briefs were immaculate - and snug as anything. His rump lived up to my expectations in all the months of ogling: it was firm, round, plump, fit, shapely, substantial, as attractive as any I'd seen in pictures or in life. His thick muscular thighs hanging down from it weren't bad either!
"Legs apart!" I commanded briskly.
"Yes, sir!" he appropriately responded. I wondered if his _c_o_c_k_ felt just as mine did at that moment. I supposed not - as his was pressed by his weight against the wood bench, mine freely stretching my pants.
Although sometimes fantasies of moments such as this troubled me, the reality was in its time nothing but a delight. Legs apart, Dan displayed even more of his fine backside. I rested my hand on it, enjoying the taut muscular feel, the resistance, and yet the slightly rubbery mass of the flesh. Ah, to live forever in such moments!
Keeping his butt under hand, I looked around the shop. A yardstick! Perfect! But first I'd treat him to my bare hand. I stepped to the side and without further ado, brought my palm down hard on his brief-clad butt. He grunted. It was an ambivalent sound - could have been pleasure or pain. Probably was both.
Again. The grunt was accompanied by a low moan.
"Go ahead, son! Vocalize how you feel!"
And he began moaning low, continuously, and slightly writhing beneath my hand. Another swat and another. He was learning fast: on each smack of my hand, he replied with an upward tilt and relaxation of his buttocks. Through the underwear I could see the shapes shifting, flesh parting. He was opening to me.
As his butt tilted more and more upward, my hand targeted lower and lower on his backside until it was just above the point at which beautiful buns become powerful thighs with that slight inward curve and then the longer swell of upper leg. I stopped and ran my hands around on his butt and down each of his thighs. Dan spread his legs apart further as I did this so I brought my hand up between his thighs. I would have liked it if he had tried to clamp them tight around it but he didn't. So I continued reaching up until my entire hand was resting on the lowest part of his butt and in his crack, fingertips feeling his balls, thumb pressing upward, pushing the cotton into his crack, deep and deeper.