"... really want to clean your dick"

"... really want to clean your dick" she says with a soft nasty smile. "It looks so delicious with all that stuff on it" It is amazing how she shows zero interest in the wellbeing of Emily who is still laying on a sofa ****.

"Then what are you waiting for my dirty slut?" You ask after throwing a quick glance on your sister. She is breathing normally and should be fine.

Carrie wastes no time getting on her knees in front of you. Neither she hesitates to start licking and kissing your cock. It doesn't jump back into action immediately, after all, you just had two sessions of very intense sex but her warm touches are extremely pleasing.

"Oh... It is so nice to have a willing fucktoy in addition to unwilling one" You moan closing your eyes to focus on the feeling of Carrie's lips and tongue "If not you, I'd never be as happy as I am now. Damn, you are so good in this" she takes the whole length of your semi-rigid dick in her mouth and starts caressing it with the tongue.

As you open your eyes and turn your attention to Emily, you find that she is awake and looks in your direction. She has already removed the gag and yet Emily remains silent. As soon as your eyes meet your sister's, fear returns to her face and she quickly turns away. This fear makes you cock jump to the full size immediately which results in long, low, pleasantly vibrating, full of arousal "mmmmmmmmmm" from Carie who seems to enjoy the situation as much as you do.

"Look, slut!" You say sternly to your sister "Look and learn. You'll need to do the same and do it well. Oh fuuuuuck" You moan as Carrie switches on her trademark rapid sucking. If that wasn't enough, you see how Emily complies to your order and slowly turns her head back. Is she really that broken already? For a moment you want to abandon your girlfriend and have fun with your sister for one more time.