The feeling of his daughter's warm saliva, soft tongue and forced open mouth, along with the reoccurring sucking action and the thick dank reek of his and his daughter's lust stink filling their dark tomb caused a fire in his stomach that stemmed from his throbbing cock that effectively shut off the part of his brain that could have stopped him from continuing the degradation they had been forced into. That fire that burned in him caused him to pull his head as far away from his daughter's soaked pussy, which wasn't far at all, and then drive it all the way into her giving it a twist with his head as he pulled away again and then repeated the action. Her hot pussy lips touching his own lips every time he thrust into her.<br/><br/>At the same time he was trying to get his hips closer to her head, just wanting to get relief from this lust that was driving him crazy. What his poor daughter must have been going through didn't even occur to him. The pain or the ecstasy she may or may not have was inconsequential to what he was currently feeling. So he drove his cock into her mouth as best he could forcing her to deep throat him. It was only for a second but the pleasure could have lasted forever.