On her hands and knees

“Oh my.” Alison murmurs when I get her on her hands and knees at the edge of the bed. Instead of resisting though she lowers her front so she is resting on her elbows and her ass wiggles in an unmistakable invitation.

“That's nice.” I rest my hands on her hips and test her height when I'm standing behind her. My cock lines up almost perfectly with the gap between her legs and pull her back so she can feel its hardness against the back of her legs.

“Did the nuns teach you about this position in your sex education classes at Saint T's?”

“Oh Mr. P, you are a wicked man.” Alison giggles softly, “Sister Helen couldn't even say the word sex, not to mention talk about it.”

“So how does a innocent thing like you learn how to wiggle her backside like you do?” By now my hands have left her hips and I am squeezing and slapping softly at her ass. “I wanted to grab this the first morning you came downstairs in those designer jeans of yours.” I squeeze her firm cheeks again. “I can't believe your father even lets you wear those.” My guess is that he's never seen how his daughter dresses when she's away at school, but any answer Alison might have given is lost when she feels me position myself against her sex.

“Did you really notice me like that Mr. P?” She grunts a little as I push into her, but as soon as she can she returns to her question. “I thought you were...” she stumbles to a halt and it is not hard for me to guess what a teenager like her thought about a man almost old enough to be her grandfather.

“...thought I was too old, huh?” I punctuate the thought with a hard thrust that spears so deep into her pussy that my pelvis slaps against her ass. Her squeak of surprise is sexy as fuck and I reach forward to grab a handful of her flowing blonde hair “... thought it would be safe to tease an old geriatric like me?” By now I've got a good rhythm going and the feeling of her vagina squeezing me feels so good that I have to watch what I'm doing or I'll be done before I even get started.

“No, Mr. P, I wouldn't!” I spank her raised cheek with my free hand even as I pull her head back by her hair. The slap isn't particularly hard, nor am I being vicious with the hair, but I can only imagine how **** this young woman must feel in this position. If she tries to move forward my grip in her hair will become much more painful, but if she backs up she only impales herself even more on my shaft.

“But you did, didn't you?” I growl fiercely and slap her again on the same spot as before. “The shy preacher's girl showing off her newly developed womanly curves.” I pull back a little and then slam into her as hard as I could savoring the tightness and her whimper of defeat. “You wanted to be fucked, didn't you?” I demand as I pull back again, “You wanted to drive me crazy until I just had to fuck you just like this!”

“God, yes!” Her voice is full of undisguised desire, “I didn't even know that's what I wanted, but it was … Jesus forgive me, I needed you to take me and make me yours.” This surrender is more than I can take and with a grunt I shoot what little sperm I have left into her and collapse onto her shuddering body.