Keep using her mouth

Phil's fingers tightened in Alex's hair, and he kept moving her head, thrusting his hips and moving her head, his cock plunging its entire length into her mouth, making her gag every time his cock head pushed into her throat. Then his cock started twitching inside her mouth, the first spurt of semen coating her tongue as he thrust forward, the second and all following spurts going down the girl's throat.

Alex tried to push her dad's thighs away, trying to gasp for breath, but she wasn't strong enough to move him back, and she didn't realize her attempts to breathe were only stimulating Phil's cock. Phil leaned his head back in ecstasy as he came, not even thinking about who's throat his cock was in.

Finally, just as Alex's eyelids started fluttering, Phil pulled his cock from her mouth, and she leaned forward, coughing harshly and Phil's hands stopped pulling her hair and started stroking it. "That was wonderful, baby," he murmured at the distraught girl.

Alex looked up at her dad, tears in her eyes. "Why... how..." she rasped.

Phil leaned down, his face right in front of hers. "Why and how don't matter," he said, his lips lightly kissing hers. "What matters is how much fun we're going to have from now on."

Alex moved her hand to cover her mouth in shock. "Don't look too worried," Phil said, grinning. "I don't plan on only using your mouth. That sweet pussy's calling my name."

Fresh tears fell from her eyes, and one hand drifted between her legs as she realized what her dad had in mind.