"Lay one of the towels...on the floor..." was the next instruction from John, his breathing deepening as the next urges started to build. Sherlock had just managed to spread the towel out when John could no longer fight and gave into the urge to push, his body on autopilot now as it directed his actions. Instinctively, his hands reached for Sherlock's arms and sensing that this was what John needed now more than anything, he allowed John's fingers to squeeze painfully tight into his shoulders. John's green eyes then match up with his own gray ones and lock, showing unrelenting focus for nearly a full minute as he forced the baby further down.
He screamed bloody murder, unaware of any coherent words coming out of his mouth or the work his body was unconsciously doing, until he felt a sharp pop. He heard Jason telling him the head was out but didn’t have time to react before the shoulders were forcing their way into the world as well and it took all of his strength not to pass out on the spot.