I am on vacation at a lake in Croatia with my personal slave. He carries the inflatable into the water and sets it in place. I lie down on it. He stays in the water at my feet. There are people around, so we try not to get seen.First he gives me a foot massage. He presses his thumbs into the soles while constantly looking around to check if anyone is watching. He keeps shifting the inflatable slightly to stay away from the nearest people. After a while he starts licking my feet, running his tongue over the soles and sucking my toes one by one, still glancing left and right the whole time.Suddenly I need to piss. I move my panties to the side. I piss like a fountain while he tries to drink. Then I get off the inflatable, climb over him and sit on his face like on a toilet. I piss straight into his mouth. He tries to swallow everything but cannot catch the stream properly and some of it runs down his chin and chest.I get angry. I grab his hair, push his head underwater and hold him there. After several seconds I pull him up. He is gasping and red-faced. I give him two hard kicks in the chest with my foot, pushing him away.Get out of my sight until I call you back.He lowers his eyes, humiliated, and swims off toward deeper water while I climb back onto the inflatable and settle under the sun as if nothing happened.