At the lake, under bright sunlight, I lead my slave on a leash. Naked, he crawls like a dog on all fours, the pebbles digging into his knees. He whines, but I make him endure it. I give him a few sharp slaps on his ass and order him to stick his ass out. Now thrust my strap-on deep inside his butt, fucking him without mercy. I make suck the dick, that was just buried in his hole, no matter how dirty it is! He sucks it obediently. I command him to clean himself, then I fuck him again, harder, as he moans loudly, maybe from pleasure, probably from pain. The risk of a passerby catching his humiliation in this public place only makes it even hotter to use his ass.