Consciousness is returning though, he’s aware of the sound finally being laid aside, of John’s hand wrapping around him, the ball stretcher seeming to throb and squeeze more strongly with his pulse, with each pull of John’s hand. He bites down on the gag, panicking that John is going to rip his sanity out of him along with his orgasm, throbbing and excruciating and making him scream John’s name.

Then it’s over, and John strips him of the gag and cuffs and lays him on his side, and his sanity is still there, only dulled with exhaustion, and John is warm and lets Sherlock curl up around him, cradles Sherlock’s head on his shoulder, and waits for sleep.