A 'Rear' Door Solution

Scooting Mary off the bed I roll and pat the empty space by me while looking Susan right in the eye."Why don't you come here and let me tell you how things work in this word."

"You mean why don't I come over there and let you teach me like you did Mary?" winking at both her sister and me.

"Susan do you think I just want to teach you carnal knowledge!" getting up and off the bed, going over to her, taking her by the shoulders "Let me tell you about this world!" Leading over to the bed "Like Porkbelly there is the front door and a back door to getting thing!"

Guiding her onto the mattress onto her stomach, I trace her body "Consider that we live at your shoulders." Working my way down to her breasts "With the help of some friends, we can continue our journey to a Plutonium leads us to a valley between two hills." My hand now on the globes of her petite ass, spreading then revealing her soon to be filled back door.

"Ohh! I'm beginning to understand!! sighing as continue to massage her and prep her at he same time.

I continue my explanation "With a place person knocking on the back door we can get in and obtain what we need!" My cock pressing hard against her sphincter before finally popping inside. She squeals in pain as i slowly move more cock into her.

"Oh and once in what happens!" sighing and panting as i slowly begin to move in and out.

"Well we search all hallways find our goal and then!" that when I ejaculate into her ass

"Oh I get it now!'

Yeap! she got it alright and soon will be getting it once more in the front door!