The Zoologists/Open your mouth

Lisa opens her mouth to speak. As that happens she feels her dads cock enter her mouth. She still try's to talk which moves his cock around in her mouth.

The motion in her mouth starts to get his cock hard. He starts to hump her lips. Davids cock isn't even at its fill as it starts hitting the back of her throat.

Lisa feels the cock hitting the back of her throat. It starts to go down her throat as he starts throat fucking her with his cock at its full length.