I went faaaar back on some backroads of Ouachita National Forrest, found a spot on the lake that was very secluded; it wasn’t a busy part of the lake, and the angle was such that you would essentially have to be directly in front of the little cove I was at to see me at all (the entire day I saw two boats pass by about a half mile away). So I had myself a sunset skinny dip with the pup. When we go out and wrestled around a bit, I saw his knot bulging in his sheath, and I realized I was pretty horny too. We tried me on all fours on the beach, but it was kinda rocky and uncomfortable (didn’t want to be tied there for an extended period haha), so I hopped on my big folding chair and had him jump up missionary. It took him a few attempts to figure it out, a few painful stabs with his cock bone, but once he slipped in, he hooked his paws around my hips and shoved his dripping puppy cock balls deep and jack hammered my hole like a madman. He usually has a few start and stops before he tries to plant his knot, but this time he started swelling almost immediately, and as deep as he was going into my ass, he was fully seated first go, and ROCK hard not long after that. It was actually a really comfortable position, and I spent about 5 minutes squeezing and relaxing my hole to keep him pumping, I could feel his hot cum building up inside of me, and it was the first time I had him in long enough to really feel the pulse of his knot as he bred me with his pups. I tried to last longer, but the way he was positioned on me, my cock was against the bottom of his chest, and eventually his fat knot throbbing against my spot, and his soft fur grinding my cock, I had a screaming, and I mean SCREAMING orgasm. It was really liberating getting to let myself lose like that, I could hear my loud orgasm echo off the cliffs. I held his knot in me a bit longer, giving him deep kisses and telling him he was a good boy, and I reached around and massaged his little hole and loved feeling it twitch just before I felt his knot throb. He didn’t stay in much longer, I’m pretty sensitive after I blow, and the longer I wait, the more it hurt. To be honest, I kinda liked the sudden quick pain of him popping out, the release was amazing, and soooooo much puppy cum came gushing out of me. After the pop out, I got hard af again, so I laid down beside him and let his cock splash my face with that hot coppery goodness, and I left it to dry after. I was able to cum again, and he cleaned me up before his knot deflated enough to lay beside me and relax. In the aftermath, I discovered we had snapped a part of my chair, which sucked since it was expensive, but worth it to get my first missionary knot. So yeah, highly recommend getting a knot in your cookie by a lake in Arkansas.