You're sharing a bed with mommy and your younger sister while dad's away on a business trip, so you decide to wake mom up by eating her pussy. As soon as she realises what's going on under the covers, mommy begs you to stop. You can't do things to mommy in front of your sister! But you carry on and she can't help moaning because it feels so good. You sister wakes up wondering what all the noise is about and mommy tries to comfort her, telling her you're just giving mommy a really good massage. She tells her to go back to bed but she can't so mommy kisses her to make her feel better. All three of you are now so turned on, mommy invites you up to join in the kissing. She begs for your spit in her mouth then tells you to slowly dribble into your sister's mouth too. Too horny to resist, mommy pulls you on top of her and tells you to stick it in her while she makes your sister suck on her nipple. Then she tells you to give it to your sister too. Your sister is reluctant but mommy convinces her to try it, promising she'll love her brother's cock. Mommy plays with herself while she watches, then gets on top and rides you as she instructs you to eat your sister out. Suddenly, mom's phone is ringing and it's dad. She tries to keep everyone quiet while she speaks to him but your tongue makes your sister cum so loud, the gig is up. Apologising but not stopping, mommy tells dad that she's too busy fucking her son and daughter to talk, and turns her attention back to you. When you cum inside mom, then again on your sister's face, mom licks it all up and dribbles it back into your mouth. You all lay down to cuddle and mommy tells you you can do this all again tomorrow if you want. (sister is implied only, off camera throughout)