Not very well

Amy gapes for a minute and stares at your cock, buried in your mother-in law's mouth. Unfazed, you use Jennifer's mouth to clean off the jizz, all the while staring at your dear niece with a most creepy smile. Finally, she manages to find her words.

"W-what are you doing? What are you doing!? Uncle David, what's going on!"

Still smiling, you rip Jennifer's mouth off your cock. Spit, slime, phlegm, and cum all fly everywhere as she collapses on the floor, hacking up her lungs and trying to get air back into them. You slowly stalk toward Amy as she fearfully backs away in response; backs away, that is, until she hits the wall behind her. You continue to leisurely walk toward her, and as you do so she begins to panic. Rapidly looking every which way, her eyes search for an escape.

Aha! The door! She never closed it, and there it hangs open, inviting her to flee outside.

She makes a bolt for it.