He gets a better show as she slides to the floor, and spreads herself entirely for his viewing unbeknownst to her. Her fingers working at her clit, and the shampoo bottle stuffed inside her it was easy to see from how her legs writhed, and body squirmed underneath that she was cumming. That triggered his own. His mind on being the bottle that was stuffing her. Filling her while her ankles dug into his back pushing him deeper inside, and begging him to stay like that. The whisper of her voice 'Do it inside' egging him on, knowing it'd get his climax. He had to be quieter, and he hadn't thought of a place to finish cleanly - and he had little time to do so. Gasping harshly as he grits his teeth. His cock twitching in finality, and pulsing like a fire hose between his hand. Translucent white ropes spilling onto the door frame as he lets his lower row of teeth go to pant like a dog. Watching the aftermath for only a second before hurrying to his bed, not wanting to get caught peeking. That would be the end of him.