I shouldn't...

You are too terrified to make another noise and try to hold still but your body is twitching and spasming beneath her. You feel like you're going to explode. You're hyperventilating and whimpering, your eyes watering, tears on your cheeks.

Martha laughs cruelly.

"No? You don't want mommy to see what a nasty, little boy you are?"

Her cock slides into you faster now and she begins pounding into your ass. Your breath comes out ragged between and you bite into the pillow, stifling your cries and gasps.

Martha keeps your wrists firmly pinned behind your back. She slows down a bit and leans into you, breathing against your ear.

"But I kinda want to. I want her to come here, open this door and see me balls deep inside of you."

Martha chuckles in your ear.

"I think she would be delighted to see that her daughter and her stepson are finally bonding."

"Are we bonding well, dear brother? Do you love your stepsister more now?"

Your eyes roll up and you moan into the pillow, drool spilling out of your mouth and smearing your face.

"There is no better way to bond with your stepsister than with your ass in the air and a dick in your cute hole. Don't you think?"

"Do you love your stepsister?"

She whispers in your ear, as her cock throbs and pulsates in you.

"Answer me."