He gagged on the cock that was thrusting down his throat. The board he was bound too, wouldn't allow him to get freed, so he was forced to suck the old cock in his throat. Just when he thought he was going to pass out from lack of air, the cock came down his throat, forcing him to swallow it. He was able to get two good breaths in when the cock came out, but another one got shoved into his mouth. Either he sucks off all of these men, or he'll suffocate.