Family Ties/Just cum inside already!
She's so wet right now, she wouldn't notice a little extra fluid, right? Besides, if she wanted your dick so badly, she should know this was going to happen! You sit up and wrap your arms around her torso, burying your face in her cleavage. The two of you grind against one another and you can feel her pussy clench around your shaft. "Oh fuck me...don't stop! Don't stop!" she moans into your ear. Well, you heard the girl! You keep moving your hips and trying to push deeper inside her when you feel your balls tighten. You begin pumping load after load of incestuous sperm inside of your sister, and to your surprise, she seems to love it! She stops moving her hips as she feels the first few blasts of hot seed fill her up, triggering her own orgasm. It feels like her pussy is trying to milk you for all your worth! Heather collapses on top of you, but your penis still has a few more good bursts to go in what feels like the longest orgasm of your life. "Oh Timmy." your sister starts to say in between panting gasps. "We're going to have the whole vacation to 'cuddle' like this." she says dreamily. You had planned to make some moves on your mom during the trip, but nothing says you can't manage to get both of your bombshell family members into bed with you. Exhausted from all the unexpected physical activity, you drift off to sleep with your naked sister cuddling around you.
You wake up the following morning to find your sister had already snuck out, probably to finish packing and getting ready for the trip. A look at your alarm clock shows you have some time to kill before you're all supposed to leave.
Do you: