""I have an idea about that." I told my daughters. I pointed at my older daughter and said "When I'm fucking your pussy," then pointed at her sister "you can sit on her face and kiss me. That way all three of us have our moans muffled. And when I fuck you, your sister" returning to pointing at my older daughter "can do the same." I 'forgot' to mention the side benefit to me; with all our mouths occupied, I couldn't warn them I was about to cum like I usually do, and they couldn't insist that I pull out!"