Go on in!

 "In my mouth." you say, trying to be as seductive as you can, which really hits the nail on the head for Keri.

 "Mom! I-I can explain!" she stammers out, a blush glides over her face highlighting her embarrassment. "I was just uh... jus-" she couldn't even finish her sentence, not that she could in her state, when you placed a kiss firmly on her lips. Not any mother-daughter innocent peck, you open your mouth slightly, silently asking for her tongue and her permission. You can feel her cheeks get hotter as her blush intensifies. She eventually allows you access into her mouth. You let your tongue wander this new mouth, slowly swirling around her tongue. Both playfully fighting for dominance, neither seeming to pull ahead. You reach down to your daughters cock, still slick from her session earlier. She moans softly into your mouth, still sensitive having not yet come.

    You pull your mouth from hers. "Mom, please" she says longing in her eye, not yet realizing what you are about to do. As you pull away, you fall to your knees. She then realizes what you want to do.

 "I told you, i want you to come in my mouth." you say placing your lips around her cock. And then a knock comes on your front door.