The increased brightness though my eyelids indicated that it must be morning. What had woken me was a growing hardness and a warm and most enjoyable sensation. Unmistakably the feeling of a warm mouth working on my cock. I lay there enjoying the feel of a pair of lips working the end of my cock. Eventually I opened my eyes and froze. Instead of Beccy, as I had expected, Pippa was there kneeling next to the side of the bed and pumping her mouth up and down on my engorged rod.

"Pippa, what do you think you're doing ?" I hissed

"I should think it was obvious" she smiled back.

I turned my head around and saw Beccy's slender form asleep on the other side of the bed, curled up and fortunately facing away from me. I turned back to Pippa who had recommenced sucking on my cock. She was very good - among the best I had ever had - licking and sucking and nibbling.

"Stop it !" I tried to order.

"Why ?"

"Because, because ..." I couldn't think, my mind was in turmoil.

"What about Beccy ?" I whispered

"What about her, what she doesn't know won't hurt her"

"No I mean she could wake up" My cock was jumping in enjoyment of the oral action and the powerful hand movements she was performing.

"Oh so no objection to the idea of me sucking you off then ? Turn you on does it ? The idea of being sucked off by one niece while lying in bed with the other ? You are horny aren't you ?" and without waiting for a response shoved my cock in her mouth. Pippa bobbed up and down licking and sucking the head and shaft. I could see one hand massaging my balls while the other stroked the shaft. She proceeded to fuck my cock with her hot, wet mouth. I felt myself start to cum and prepared to send my load into her pretty mouth and down her throat. Suddenly she grabbed the base of my cock and gripped hard. Closing down the pumping action and preventing me from cumming.

"Why are you doing this ?" It was all I could think to ask.

Pippa leaned back on her heels. "Well I left to go round to Andy's last night. When I got there he was drinking, and he didn't stop. I tried to lure him to bed but he was incapable of performing. I eventually had to mount him but after a couple of thrusts he came and then fell straight asleep. Snoring loudly to add to it. I was so horny, especially after what you did to me in the kitchen, that I masturbated myself envying what Beccy was getting. Then I snuck away this morning before Andy awoke, although I suspect he'll sleep well into midday. He's blown it with me now ! As I came past Beccy's room I peeked in and saw you both lying there. With the covers thrown back I could see you naked, with a magnificent stiff cock. Dreaming of fucking Beccy were you ? Or should I say dreaming of fucking your schoolgirl niece, I couldn't help noticing she's wearing my school skirt and socks. You dirty old man, like the idea of fucking schoolgirls do you..?".....(cont)