I started canoe camping before puberty, but after puberty I tended to imagine that any male-female couple I saw camping must be having sex in their tent. A reasonable conclusion (although when I got older it was not very true for me and my wife).
One day I was exploring a small island on which I had camped with some other guys, and discovered that a couple had camped on the other side of the island, which was probably only a couple of hundred yards diameter, but had dense woods with few paths.
Being somewhat of a voyeur, I was hoping to see some sexual contact. The male seemed to be ignoring the woman, who was middle aged but not flabby- a ponytail and nice tits in a T shirt and short shorts with wide legs. Nice rear end also. She was being very attentive to him, offering kisses and even grabbing at his crotch once- but he was gathering his fishing gear and finally got in the one canoe, and paddled away.
I considered watching more, but instead I just blundered into their campsite- as if I had been exploring the island (which was true) and had just arrived at her campsite (not true).
I gave an alert, "OH!" ... "sorry, I didn't know anyone else was camping on this island- my friends and I are on the other side."
I was probably going to blunder back into the woods, but she quickly asked if I wanted some coffee. "Sure! we usually have a cold breakfast, no fire- coffee would be GREAT."
I was 18 at the time and a freshman in college. She had to be over 30, but had all the parts of a woman and was actually very pretty even without makeup.
I accepted the mug and she poured the coffee- then made a very slow effort placing the pot near the fire, with her butt toward me (and not that far away). I imagined I could smell her pussy, and actually the leg holes of her shorts were big, and I imagined I could see some pussy hairs hanging down when she bent over- what I could not see was any panties!
I had NO idea how to propose sex to this woman, but the coffee was really good and so I started talking about different lakes we had been to. She started talking about how her husband had left her to go fishing, even though they had been fishing the day before and caught nothing.
I asked how she liked sleeping on the ground, and she explained that they had a really good air mattress that filled their small tent- so the ground was not a factor. I explained that I had never used an air mattress- and she offered to let me "try it out".
As I started into their small tent, she suggested I take off my boots so I didn't get dirt in the tent. As I kneeled, my knees did touch down to the ground when they compressed the air mattress - and she explained that I needed to spread out to prevent contact- and once I did that (and agreed that it was really comfortable- she explained that it was inflated for two people- and she hopped onto the air mattress next to me.
"What happens if your roll together?" I asked. "I have never slept in a bed with someone else, much less on an air mattress."
"Oh..." she explained.. and laughed... "the air mattress is soft for sleeping, but for sex, it is not like a bed at all. Let me show you."
WOW! I was wondering how to bring up the sex idea, and she was way ahead of me. Of course she knew I was interested, because I already had a hard-on from when she had bent over in front of me!
She undid my shorts, and slipped them down and was sucking my cock before I could say anything, but what would I have said?