I prefer fresh clean panties borrowed from my wife's underwear drawer. Wearing them and masturbating in them.

At my all-boys school aged 18. I used to masturbate with other boys. One day a boy brought a pair of his sisters panties and put them on. They were tiny, black with a red flower pattern. I was blown away with how sexy they looked bulging over his cock and showing its erect outline. I put them on and loved the soft feel of them. We hand jobbed each other but he wanted me to hand job him through his sisters panties. I was hooked on womens panties ever since.
My first time was when I was 18 at a school sports swimming class. I shared a changing cubicle with another boy. After the lesson we were naked together with our cocks up hard. He hand jobbed me off then asked me to suck him. He sat on the bench with his legs wide and his cock straight up. I didnt want to appear shy. I licked his cock and balls all over then took his shaft between my lips and bobbed up and down like when I hand jobbed a boy. His cock tasted of chlorine from the swim. He came in my mouth and said it was a good one. But I prefer hand jobbing a cock.
I think all boys try their mothers panties on. That's how I started. I loved the soft feel of them taut over my hard up cock, how sexy they looked on me and how the thin cloth showed the outline of my shaft and head in detail. At my all boys school and at university I discovered boys who'd got into women's panties that same way.
Frottage (rubbing cocks together) is a thrill if you both have really stiff cocks. Best if you sensitise your cocks with foreplay before so the cock-to-cock friction takes you to cum. I find usually one cock cums first and the other needs a tug off. Its nice to have cocks together parallel and one partner stroking both.
We waited till we were married and it was worth it. Neither of us had any hangups about past sexual relationships and it was all new and so exciting! That first time romping naked together after we married was incredible. I had the hardest erection I'd ever had! Well worth the wait.
My girl and I were undressing each other for sex. I was down to my briefs. We'd been kissing and fondling before and I was rock hard erect. The friction of my briefs against my cock head set me off and I spurted my load into my briefs and soaked them with cum. Very embarrassing but we made up for it later.
Yes. In fact early on we were naked in bed together and she asked me to show her how a man masturbates and I put on a good show for her. Now I sometimes masturbate in bed with her when I'm in the mood for sex and she isnt. She watches me, caresses my balls as I tug and hands me a tissue to clean up!
I like smooth satin panties because they are lovely to rub one off through. I dont care much about the cut but like them only just big enough to cover my erect cock. I like the fabric to be thin enough to show my cock outline in fine detail. Colour I prefer is black, light grey or purple.
On my business trips to Europe I regularly go to one back of an adult store in an airport. It shows hot porn movies, usually only straight. It's a good place to have some relaxed jerking off in the dark as I watch. I've often been approached in there by other men for cock play, hand jobs and oral. Ive also been approached by prostitutes who haunt the place and offer services in a room upstairs.
On my business trips abroad I visit an adult video / magazine / toys store. Often I've seen guys get their cocks out in the aisles and jack off as they browse porn. Ive been approached by guys with their cocks out wanting a suck off or hand job. A few times Ive got mine out and we've hand jobbed each other usually in one of the video booths.
In a cave in cliffs next to a beach in Cornwall, England. She was in a bikini me in spedos. We were kissing and groping. I took her bikini top off, her hand went down inside my speedos. The rest is history. Then later, with her standing with her back against a tree in the New Forest, England. The root mound got her to just the right height.