Sally was on her hands and knees on the bed, her cute little bottom up in the air as she got used to the butt plug I'd just slid into her anus.

"How is that feeling, sweetie?" I asked.

She wiggled her hips experimentally. "It's not too bad. It makes me feel full, but it's nice when I wriggle about a bit."

"That's good. Why don't you roll over carefully and try sitting down."

She did so, very slowly, getting used to the sensation of the plug inside her, then sat with her legs over the edge of the bed. "Oooh! Umm, that's... oooh! I think I like it!"

"Good girl. Now as I said, I like having things put into my bottom too and this is the strap-on that your mother used to use on me. Fortunately the straps are all on slide adjusters, so I can get it to fit you."

She stood up and I held the harness up so she could step her feet into it, then I pulled it up and secured the straps around her waist before tightening the crotch strap between her legs, making it ride up between her bum cheeks.

"Mmm, that makes the plug push inside me," she giggled.

"In a nice way?"

"Oh yes, very nice, and look," she smiled, pointing at her crotch, "now I've got a penis too!"

"So you do and I hope you're going to put it into daddy."

"Sure, what do I do?"

"First of all you need to put a lot of lube on it, so it slides in easily." She held her hand out and I tipped the bottle over, pouring some into her palm. I watched as she rubbed it all over the dildo, an action which looked incredibly horny.

"That's good, now you need to put more onto daddy's bottom as well." I poured out more lube and she rubbed her fingers up and down my bum cleavage, then pushed her finger into my anus.

"Oh yes, honey, that feels really good!" I was already getting incredibly turned on just by the feelings of her fingers, I couldn't wait to feel what it would be like when she fucked me with the strap-on.

I handed her a tissue and let her wipe her fingers dry, then lay back with my hips on the edge of the bed and my knees pulled up.

"Now put the end of the dildo, that's another name for the rubber penis by the way, against my bottom hole."

She shuffled forward a little and put the tip of the phallus against my anus. "Good, now, very, very slowly and gently, I want you to push it inside me."

She pressed her hips forward a it and the end just popped inside me. "That's right, now push in a little bit, then wait for me to get used to it."

"Like you did with me, you mean?"

"Yes, honey, exactly like that."

"Ok, daddy." Gradually, as I'd told her, she started to push the dildo inside me, going a little way, then pausing, then a little further. It had been over two years since her mother had died and I'd not been anally penetrated since then, so I was a bit tight, but my darling daughter was very careful and considerate and I was so turned on that after a couple of minutes, she'd managed to get the whole of the rubber cock inside me.

"Oh, Sally, you darling, that's wonderful! It feels so good. Now what I want you to do is slowly slide it out of me, then push it back in again." She did as I said and I luxuriated in the sensation of my eight year old daughter fucking me.

"Is this right, daddy?"

"Oh yes, that's so good, yes, keep doing it, just like that."

"Ok." She giggled suddenly. "You know, when I push it into you, it pushes against me too. And when I pull it out, the straps push the plug into my bottom a bit more."

"I bet you like that, don't you?"

"Definitely!"

"Good, now there's one more trick this toy has." I reached forward and pressed a button under the surface of the dildo down by the hilt and it suddenly started vibrating.

"Oooh!" Sally gasped, "that feels nice."

"Yes, sweetie, it feels nice for me too. Now fuck me, fuck your daddy!"

"Yes daddy," she said, pushing into me again.

Slowly I coached her, getting her used to the best way to use the dildo on me, almost ecstatic at the sensations I was feeling.

"Oh god, Sally, you're really good at this, now put your hand on my penis and rub it."

She reached down and started to masturbate me and I couldn't hang on any longer as I climaxed in a way that was almost agony in its intensity. Sally must have hit her peak too from the vibrator in the dildo because she squealed and came at virtually the same time.

Gently I reached down and helped her slip the dildo out of me and wrapped it in some tissue before unstrapping it from her waist. I turned her around and carefully slipped the plug out of her bottom, then wiped the lube off her bum and mine and threw the tissues into the bin, then said "Darling little Sally, that was absolutely wonderful! Come and give me a kiss and a cuddle."

She lay beside me on the bed and we embraced before falling asleep in each others' arms.